統計と確率
データ分析、確率分布、仮説検定、統計手法。
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a marine biologist claims that the mean length of mature female pink se…
\(t = 1.317\)
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bellringer (11/18/2025): what does it mean to refinance a loan (e.g., a…
Refinancing a loan (e.g., mortgage or student loan) replaces an existing loan with a new one. People do this for lower rates, term changes, or equity access. Main risk: closing co…
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a marine biologist claims that the mean length of mature female pink se…
B. "The mean length of mature female pink seaperch is different in fall and winter." The alternative hypothesis \(H_a\) (\(\mu_1 eq\mu_2\)) is the claim.
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in robins linguistics class, the teacher and students are discussing ho…
B. semantics
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test the claim about the difference between two population means \\( \\…
\(t\approx2.21\)
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test the claim about the difference between two population means \\( \\…
\(P = 0.026\)
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test the claim about the difference between two population means \\( \\…
\(t\approx - 2.35\)
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test the claim about the difference between two population means \\( \\…
\(P = 0.090\)
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test the claim about the difference between two population means $\\mu_…
The standardized test statistic \(t\approx - 1.76\)
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the mean exam score for 45 male high school students is 24.1 and the po…
At the $1\%$ significance level, there is **sufficient** evidence to **reject** the claim that male high school students have exam scores **equal to** female high school students'…
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the mean exam score for 45 male high school students is 24.1 and the po…
D. Reject \(H_0\). The standardized test statistic is in the rejection region.
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the mean exam score for 45 male high school students is 24.1 and the po…
\(z = 3.37\)
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the mean exam score for 45 male high school students is 24.1 and the po…
G. \(z < - 2.58,z>2.58\)
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the mean exam score for 45 male high school students is 24.1 and the po…
\(-2.58,2.58\)
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alan baker interested in the number of chairs per household people have…
The mean: \(3.0\) chairs; The median: \(3\) chairs; The mode: \(1\) chair
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goal: find the mean, median, and mode of data given in a frequency char…
mean \((\bar{x}) = 23.8\) median \(=24\) mode \(=24\)
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read the quote below by van morrison and answer the question that follo…
B. An individual often perceives the same concept or idea differently from another.
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goal: find the mean, median, and mode of data given in a frequency char…
The average (mean) aptitude score: \(3\) The median aptitude score: \(3\)
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goal: find the mean, median, and mode of a data set. the highway mileag…
Mean = $26$ Median = $27$ Mode = $28$ Range = $9$
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homework 6.1 - describing data score: 44.51/100 answered: 13/21 questio…
The mean is $3.5$, the median is $2.5$, and the mode is $2$.
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the line graph below shows the number of times maria drove her car each…
3
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read the excerpt from the joint statement by president roosevelt and pr…
Roosevelt and Churchill are aiming to bring peace and freedom to the people of all nations.
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data was collected for a sample of organic snacks. the amount of sugar …
\(40\)
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from unit 3, lesson 6 a researcher creates a scatter plot that displays…
The residual for the point \((3,0.42)\) is \(0.087\) and the residual for the point \((3,0.3)\) is \(-0.033\)
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what message is spiegelman trying to convey in the panel? the good stam…
By being presentable and appearing able - bodied, the individuals still had hope they could escape a terrible fate.
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4. shawn wants to increase the number of laps he can run on a track. he…
C. The \(y\) - intercept means that Shawn ran \(4\) laps at week \(0\).
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2 the number of minutes on the phone and the customer satisfaction rati…
A weak negative relationship implies that while there is a tendency for customer satisfaction rating to decrease as the number of minutes on the phone increases, the association i…
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5 why does tim explain the process of passing laws? a to show how feder…
C. To demonstrate checks and balances
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calculate the median for each of the sets of numbers: 1. 34, 43, 45, 1,…
1. \(32\) 2. \(30\) 3. \(32\) 4. \(17\) 5. \(22.5\) 6. \(15\) 7. \(35\) 8. \(28.5\) 9. \(43\) 10. \(23\)
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1 the number of hours worked, x, and the total dollars earned, y, have …
As the number of hours worked (\(x\)) goes up, the total dollars earned (\(y\)) goes up significantly, with data points closely following an upward trend.
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the excerpt is from the history of cotton manufacture in great britain,…
Water supplied power and a means of transportation.
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does this scatter plot show a positive trend, a negative trend, or no t…
no trend
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does this scatter plot show a positive trend, a negative trend, or no t…
no trend
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kai and yaw are selling school spirit wear for a fundraiser. kai wants …
- **Inequalities**: \(6x + 4y\geq100\) (or \(3x + 2y\geq50\)) and \(5x + 8y\geq120\) - **Variables**: \(x\) represents the price of a shirt, \(y\) represents the price of a pair o…
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from unit 3, lesson 6 tyler creates a scatter plot that displays the re…
When the hamster eats \(1.2\) grams of food, the actual number of rotations of the wheel is \(117\) more than the number of rotations predicted by the line of best fit.
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this excerpt is from the newspaper column, my day. where do human right…
She used her position to promote equality, opportunity, and social reform.
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a landscaping company placed two orders with a nursery but lost their r…
- **Inequalities**: \(13x + 4y\geq460\) and \(6x + 2y<250\) (or \(3x + y<125\)) - **Variable representation**: \(x\) is the cost of one bush, \(y\) is the cost of one tree - **Pos…
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read the excerpts from the poem in the boxes below. drag one sentence f…
1. Early blooms have faded. 2. Everything is dull and dry.
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read the sentence below. drag one word to each box to explain how figur…
First box: onomatopoeia Second box: familiar
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by researching labor market information you will learn about: the suppl…
For the first question: all of the above. For the second question: a goal you have met, or something you have done well, felt proud of, been complimented on, or been rewarded for.
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by researching labor market information you will learn about: the suppl…
- Question 1: all of the above - Question 2: a goal you have met, or something you have done well, felt proud of, been complimented on, or been rewarded for.
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what does popular sovereignty mean? the governments power comes from th…
The government's power comes from the people.
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statistics from frequency table to histogram 11/18/25 this is due by en…
| INTERVALS from Low to High | Frequencies | Relative Frequencies | Cumulative Frequencies | | --- | --- | --- | --- | | 6 - 9.9 | 2 | 0.067 | 2 | | 10 - 13.9 | 7 | 0.233 | 9 | | …
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anagnos: possible. i should warn you, she is much given to tantrums. an…
The reader gets background information that Helen might not have known about or experienced.
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julia has a part - time job at an ice skating rink selling hot cocoa. s…
The point \((21,65)\) represents that on a day when the high temperature was \(21\) degrees Fahrenheit, Julia sold \(65\) hot cocoas.
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fill in the blank question the root word means head. need help? review …
cephal -
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answer the expected weight of a catfish that is 1 inch long. the rate o…
The rate of change in the expected weight of the catfish over its length.
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a survey asked a random sample of students if they estimated they spent…
|Social Media|More|Less|Total| |---|---|---|---| |7th grade|14|16|30| |8th grade|16|21|37| |Total|30|37|67|
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what does 70/30 mean? * 1 point the insurance company pays 70 percent a…
the insurance company pays 70 percent and you pay 30%
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statistics from frequency table to histogram 11/18/25 this is due by en…
|INTERVALS from Low to High|Frequencies|Relative Frequencies|Cumulative Frequencies| |---|---|---|---| | \(8 - 11.4\) | \(3\) | \(0.130\) | \(3\) | | \(11.5 - 14.9\) | \(4\) | \(0…
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a random sample of students was surveyed and asked to list their grade …
\(65.5\%\)
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a random sample of students was surveyed and asked to list their grade …
\(62\%\)
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statistics from frequency table to histogram 11/18/25 this is due by en…
|INTERVALS from Low to High|Frequencies|Relative Frequencies|Cumulative Frequencies| |---|---|---|---| |8 - 11|4|0.133|4| |12 - 15|6|0.2|10| |16 - 19|8|0.267|18| |20 - 23|6|0.2|24…
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statistics from frequency table to histogram 11/18/25 this is due by en…
MAX THROW \(=29\), MIN THROW \(=8\), RANGE \(=21\), INTERVAL WIDTH \(=5\)
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doc 1 shows the spread of the taoist church in china. doc 2 shows the h…
B. The southeast was the hearth for Chinese culture causing its spread during the Han Dynasty.
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5. make a residual plot for the linear model and the data set it repres…
| \(n\) | \(C(\$)\) | | ---- | ---- | | \(0\) | \(1940\) | | \(10\) | \(2690\) | | \(20\) | \(3440\) | | \(30\) | \(4190\) | | \(40\) | \(4940\) |
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thanksgiving in the united states has grown from a simple harvest celeb…
1. B. Thanksgiving developed into a national holiday centered on gratitude. 2. C. She promoted Thanksgiving as a national holiday. 3. B. To encourage national unity. 4. A. Traditi…
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6. a violent crime occurs every 10 minutes in a depressed urban area. l…
A. $P(X > 50)\approx0.0067$ B. $P(X > 30)\approx0.0498$ C. $P(X < 9)\approx0.5934$ D. $P(X < 2)\approx0.1813$ E. $P(5 < X < 8)\approx0.1572$ F. $P(16 < X < 32)\approx0.1611$
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uses objective j 1. jennifer and barry run an ice cream shop. they gath…
b. \(y = 120x-8000\) (example value, actual depends on calculation) c. Slope is \(120\), meaning for each \(1^{\circ}F\) increase in temperature, cones sold increase by about \(12…
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a data set includes weights (in grams) of 40 reeses peanut butter cup m…
\(H_0:\mu = 8.953\) \(H_1:\mu eq8.953\)
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the median of 5, 7, 2, 9, 8 is: 1 point 5 7 8 6
7
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1) gaia saw that a blender was discounted 35% from its original price o…
The discounted price of the blender is \(\$25.99\)
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mending wall by robert frost something there is that doesnt love a wall…
The poems have different speakers.
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mending wall by robert frost something there is that doesnt love a wall…
He is repeating what his father used to say.
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mending wall by robert frost something there is that doesnt love a wall…
We wear our fingers rough with handling them. Oh, just another kind of out - door game.
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mending wall by robert frost something there is that doesnt love a wall…
The speaker and the neighbor repair the wall from opposite sides.
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mending wall by robert frost something there is that doesnt love a wall…
the poet, Robert Frost
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mending wall by robert frost something there is that doesnt love a wall…
The wall is unnecessary.
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how did the civil rights movement demonstrate the power of citizens to …
By showing that, through peaceful protests and legal challenges, citizens could influence laws and policies to ensure equal rights for all.
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read the passage from sugar changed the world. with their victory, the …
They use a primary source to show that a song was spreading the idea of equality across the Caribbean. They use a secondary source to show that the idea of an enslaved people’s re…
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how did the civil rights movement demonstrate the power of citizens to …
By showing that, through peaceful protests and legal challenges, citizens could influence laws and policies to ensure equal rights for all
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\the yellow wallpaper\ by charlotte perkins gilman it is very seldom th…
The narrator feels an overwhelming responsibility to meet society's expectations.
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the yellow wallpaper by charlotte perkins gilman it is very seldom that…
The narrator feels imprisoned by her life.
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dr. haun developed a test that measures the amount of extrasensory perc…
this test measures something consistently but it may not be ESP.
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use the following information to complete steps (a) through (d) below a…
B. There is sufficient evidence to reject the null hypothesis because the \(P -\)value \(<\alpha\)
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use the following information to complete steps (a) through (d) below. …
(a) B. A hypothesis test regarding the difference of two means using Welch's approximate \(t\) (b) D. \(H_0:\mu_1 = \mu_2;H_1:\mu_1 eq\mu_2\)
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use the following information to complete steps (a) through (d) below a…
C. A hypothesis test regarding the difference of two means using Welch's approximate \(t\)
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use the following information to complete steps (a) through (d) below. …
C. A hypothesis test regarding the difference of two means using Welch's approximate \(t\)
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a physical therapist wanted to know whether the mean step pulse of men …
C. We are 98% confident that the mean difference is in the confidence interval.
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a physical therapist wanted to know whether the mean step pulse of men …
The lower bound is - 11.29. The upper bound is - 0.51.
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a physical therapist wanted to know whether the mean step pulse of men …
D. Reject \(H_0\), there is sufficient evidence to conclude that the mean step pulse of men was less than the mean step pulse of women
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a physical therapist wanted to know whether the mean step pulse of men …
The P - value is \(0.0052\). Since \(P - value=0.0052<\alpha = 0.02\), the researcher rejects the null hypothesis. There is sufficient evidence at the \(\alpha = 0.02\) level of s…
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a physical therapist wanted to know whether the mean step pulse of men …
A. \(H_0:\mu_1=\mu_2;H_a:\mu_1 < \mu_2\)
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a random sample of 40 adults with no children under the age of 18 years…
A. There is 90% confidence that the difference of the means is in the interval. Conclude that there is a significant difference in the number of leisure hours.
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a random sample of 40 adults with no children under the age of 18 years…
The 90% confidence interval for \((\mu_1-\mu_2)\) is the range from \(0.64\) hours to \(2.18\) hours.
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two researchers conducted a study in which two groups of students were …
C. Since the 90% confidence interval does not contain zero, the results suggest that priming does have an effect on scores.
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two researchers conducted a study in which two groups of students were …
A. The researchers are 90% confident that the difference of the means is in the interval.
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dr. haun developed a test that measures the amount of extrasensory perc…
this test measures something consistently but it may not be ESP.
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two researchers conducted a study in which two groups of students were …
The lower bound is $8.018$ The upper bound is $9.182$
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use the given statistics to complete parts (a) and (b). assume that the…
The \(99\%\) confidence interval about \(\mu_1-\mu_2\) is the range from a lower bound of \(-5.771\) to an upper bound of \(8.371\)
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use the given statistics to complete parts (a) and (b) assume that the …
D. Do not reject \(H_0\). There is not sufficient evidence at the \(\alpha = 0.01\) level of significance to conclude that \(\mu_1>\mu_2\)
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11 ic sem a masel nation dividing and expanding: civil war, regionalism…
Truth is testifying that women deserve equal rights because they can be as physically capable as men.
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use the given statistics to complete parts (a) and (b). assume that the…
\(0.52\)
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use the given statistics to complete parts (a) and (b). assume that the…
B. \(H_0:\mu_1=\mu_2\), \(H_1:\mu_1 > \mu_2\)
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explain the difference between an independent and dependent sample choo…
D. A sample is independent when an individual selected for one sample does not dictate which individual is to be in the second sample. A sample is dependent when an individual sel…
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in march 2003, the pew research group surveyed adult americans and aske…
B. There is 90% confidence that the difference in the proportion of adult Americans from 2003 to 2010 who believe the United States made the right decision to use military force i…
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in march 2003, the pew research group surveyed adult americans and aske…
The upper bound of a 90% confidence interval is \(0.331\)
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in march 2003, the pew research group surveyed adult americans and aske…
The lower bound of a 90% confidence interval is \(0.270\)
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in march 2003, the pew research group surveyed adult americans and aske…
The lower bound of a 90% confidence interval is $0.256$.
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in march 2003, the pew research group surveyed adult americans and aske…
A. To remove any potential nonsampling error due to the respondent hearing the word "right" or "wrong" first.