統計與機率
資料分析、機率分佈、假設檢定與統計方法。
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the mean daily production of a herd of cows is assumed to be normally d…
a) \(0.3557\) b) \(0.1093\)
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suppose your manager indicates that for a normally distributed data set…
\(45.14\)
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when dragons on planet dathomir lay eggs, the eggs are either green or …
$\mu = 9.9$ $\sigma = 2.8$
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a manufacturing machine has a 7% defect rate. if 9 items are chosen at …
\(0.4796\)
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can the following table be a probability distribution? 1 0.3494 2 0.351…
no
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the worlds smallest mammal is the bumblebee bat (also known as kittis h…
$1.5798<\mu<2.1382$
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a political candidate has asked you to conduct a poll to determine what…
\(1037\)
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kevin was determined to pin camerons arms to the ground, but cameron wa…
B. "We can compare notes on our bratty little sisters!"
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johnsons argument i understand that this flag has serious important mea…
allows for symbolic speech
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determine whether or not the following statements are true or false. a)…
a) False b) True
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but he was bigger than me. he hauls me back and climbs right over me! t…
A. They demonstrate how the beggar feels like an innocent victim of the explosion who should be pitied.
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in a survey of 2133 adults in a recent year, 1381 say they have made a …
The 90% confidence interval for the population proportion $p$ is $(0.630,0.664)$. The 95% confidence interval for the population proportion $p$ is $(0.627,0.667)$. With the given …
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find the t - value for the given values of x, μ, s, and n. x = 65.6, μ …
\(t = 1.54\)
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find the margin of error for the given values of c, s, and n. c = 0.98,…
\(3.140\)
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1. which of these character traits may affect the reliability of a narr…
deceitfulness
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a researcher wishes to estimate, with 92% confidence, the population pr…
(a) \(n = 1915\) (b) \(n = 1314\) (c) Assuming an estimate of the population proportion reduces the minimum sample size needed.
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find the 5 number summary for the data shown 1 10 12 13 16 21 22 23 30 …
\(1,13,23,71,86\)
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using your calculator, find the range and standard deviation, round to …
\(26.95\)
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a sample was done, collecting the data below. calculate the standard de…
$9.0$
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use the values on the number line to find the sampling error. the sampl…
The sampling error is \(0.92\)
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lesson 14 | session 1 3 mei is a park ranger at death valley national p…
The mean of the elevations is \(-1.1\) m.
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score: 12/15 answered: 12/15 question 13 based on the histogram above, …
\(5\)
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question 12 based on the histogram above, what is the class width? clas…
Class width = \(2\) Sample size = \(33\)
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supporting one another in friendship means that you __________. a. do w…
B. share trust with your friend and stand by one another in good and challenging times
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read the excerpt the engineer adjusted the circuit, careful to calibrat…
A. The word "calibrate" is a technical term specific to engineering. B. "Catastrophic failure" carries a strong negative connotation, emphasizing risk. C. The language creates a t…
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question 6 in a relatively pointless survey, the following data was col…
red
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the data in the figure below represents the number of stars earned by 1…
\(7\)
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use the confidence interval to find the margin of error and the sample …
The margin of error is $0.078$. The sample mean is $0.182$.
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directions: use this information to answer parts a and b. complete the …
The first box is \(10\) and the second box is \(10\).
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directions: use this information to answer parts a and b. complete the …
The first box is \(-40\) and the second box is \(-40\)
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why cant i forget the earnest eyes of the man who said to me in jordan,…
The anecdote makes readers empathize with the man from Jordan, in contrast to Nye, who seems unable to understand pain.
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you are given the sample mean and the population standard deviation. us…
The \( 90\%\) confidence interval is \( (62.57,123.43)\) The \( 95\%\) confidence interval is \( (56.74,129.26)\) Which interval is wider? The \( 95\%\) confidence interval Interp…
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section i: multiple choice select the best answer for each question. qu…
T5.1: (d) \(90/125\) T5.2: (b) \(32/80\) T5.3: (d) These two events are neither mutually exclusive nor independent.
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the owner of an ice cream stand kept track of the number of ice cream c…
- Linear regression equation: \(y = 10.44x - 621.52\) - Correlation coefficient: \(r\approx0.97\) - Interpretation: A strong positive linear relationship between average daily tem…
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6. smart kids the histogram displays the iq scores of 60 randomly selec…
The mean is the more appropriate measure of center. Since the histogram of IQ scores is approximately symmetric, the mean (which uses all data points) is a good representative of …
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throughout this speech, dr. king chooses to reference famous american w…
Dr. King references these works to connect with his audience, tap into shared values, and strengthen his argument for equality and justice.
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those doors where they know theres a big haul to be made. they frequent…
It is mainly about Mr. Dussel and news he brought about the peril facing the Jewish community.
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the number of newly reported crime cases in a county in new york state …
Regression Equation: \(y = 38.20x+809.40\) Final Answer: \(2020\)
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the underlined text refers to language found in what famous american do…
The Declaration of Independence
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a mathematics teacher wanted to see the correlation between test scores…
Regression Equation: \(y = 0.9x-1.1\) Final Answer: \(71\)
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in the speech, martin luther king, jr., famously declares that he has a…
African Americans and whites would live in harmony and equality.
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schoolgirl. oh well, it doesnt matter. i feel like writing, and i have …
She could express her thoughts in writing without fear of criticism or judgment.
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the perimeter of a square depends on the length of its sides. answer th…
\(Z(x) = 4x\) and \(Z(7)=28\), meaning if \(7\) is the length of one side of the square then \(28\) would be the perimeter of the square.
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which of the following is dr. king criticizing in this portion of his s…
- segregation laws of the South - high poverty rates among African Americans - discrimination
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8) consider ( f(x)=x(x - 2) ). dilate ( f ) by ( (x - 1) ) to create a …
- **Problem 8**: - Factored form: \(g(x)=x(x - 2)(x - 1)\) - Standard form: \(g(x)=x^{3}-3x^{2}+2x\) - **Problem 10**: - Standard form: \(g(x)=x^{3}+6x^{2}+9x\) - Zeros: \(x = 0\)…
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7) find the roots of the function graphed below. hint: remember that ro…
The roots of the function are \(x=-1\) and \(x = 1\).
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ive never written anything before, but also because it seems to me that…
C. deep thoughts
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1.3 displaying numerical data: dotplots 1. magic words here are data on…
36%
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the perimeter of a square depends on the length of its sides. answer th…
A function relating these variables is \(Z(x)=4x\). So \(Z(7) = 28\), meaning if the length of one side of the square is \(7\), the perimeter of the square is \(28\).
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the perimeter of a square depends on the length of its sides. answer th…
The independent variable \(x\) represents the **side - length of the square**, and the dependent variable is the **perimeter of the square**, because the **perimeter** depends on …
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jacob bought a bag containing 100 small candies. he starts eating the c…
\(65\)
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1.3 displaying numerical data: dotplots 1. magic words here are data on…
36%
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jacob bought a bag containing 100 small candies. he starts eating the c…
\(N(7) = 65\), meaning after eating candies for \(7\) minutes there would be \(65\) candies left in the bag.
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directions: select the correct text in the passage.which word meaning b…
gallant
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jacob bought a bag containing 100 small candies. he starts eating the c…
\(N(7) = 65\), meaning after eating candies for \(7\) minutes there would be \(65\) candies left in the bag.
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clothing in central asia the countries of central asia are very far nor…
A. because they needed clothes to survive the cold
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babe ruth was a legendary baseball player, perhaps the greatest player …
A. the building of Yankee Stadium
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21. exercise a researcher found that students who spent more time exerc…
There is a positive correlation between time spent exercising and test scores.
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20. basketball adriana keeps the statistics for her favorite basketball…
The slope represents the average number of points scored per free throw attempted.
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19. which equation represents the best line of fit for the scatter plot…
A. \(y = 0.6x+1\)
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use the table for exercises 13 and 14. a movie streaming service charge…
\(y = 1.5x + 11\)
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use the table for exercises 13 and 14. a movie streaming service charge…
The slope - intercept form of the equation is $y = 1.5x+11$
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the trend of changing television screens the advent of television redef…
C. inspired
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carloss math teacher finds that theres roughly a linear relationship be…
A student's expected quiz score if they spent 1 hour on their homework.
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ephs fst 4. cool colors popularity of colors for cars and light trucks …
a. \(2\%\) For part b: - To make a bar chart: - On the x - axis, label the colors (Black, Blue, Brown/beige, Gray, Green, Red, Silver, White, Yellow/gold, Other). - On the y - axi…
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on one trip, abigail threw the ball 16 times. how many times did charli…
13
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on how many visits to the skating rink did tess fall more than 6 times?
\( 3 \)
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thats punny! a pun is a figure of speech that plays on words by using w…
- "You must be blind as a bat. The remote is right there," Gina laughed: X - I've been to the dentist so many times that I know the drill: ✓ - My backpack must weigh a ton: X - Yo…
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9. the table shows the number of tickets of each price sold for a show.…
A. \(6.3\) B. \(2\) C. increase; \(4\)
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shira huddled against an ancient oak tree, wrapping her arms around the…
The description of the forest knowing she's all alone underscores Shira's feelings of isolation and her fear that the ancient oak tree might be dangerous.
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8. the mean weight of six schoolbags is 9 pounds. the weights of five s…
$9.1$
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7. an animal shelter volunteer counted the number and the type of anima…
D, H
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6. the dot plot shows the temperature (°c) of a lab sample recorded ove…
\(26\) OR \(28\)
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5. a group of high school students in the library were asked by mrs. co…
\(2\)
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4. the data set shows the number of roses in each vase for sale at lord…
\(17\)
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select the best evidence to support the statement that bridge is strong…
The best evidence is “And not that she was the type to be stopped.”
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does there seem to be a relationship between minutes played and points …
No association
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the salaries of the employees at four companies are summarized below. a…
(a) Company C (b) Company B
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select the best evidence to support the statement that marjorie has goo…
"Marjorie was startled, but she showed only a faintly heightened color and her voice was quite even when she spoke."
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the ages of the members of four teams are summarized below. answer the …
(a) B. Team B (b) D. Team D
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the test scores of the students in four classes are summarized below. a…
(a) Class D (b) Class B
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given in the table are the bmi statistics for random samples of men and…
Yes, because the confidence interval contains \(0\).
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answer attempt 1 out of 2 c = -5.5t + 44 the slope of the function is -…
The slope of the function is \(-5.5\), which means that the number of chocolates remaining in the box decreases by \(5.5\) per day.
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given in the table are the bmi statistics for random samples of men and…
A. Fail to reject the null hypothesis. There is not sufficient evidence to warrant rejection of the claim that men and women have the same mean BMI.
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given in the table are the bmi statistics for random samples of men and…
\(0.029\)
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given in the table are the bmi statistics for random samples of men and…
The test statistic \(t\) is approximately \(2.22\)
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given in the table are the bmi statistics for random samples of men and…
D. \(H_0:\mu_1 = \mu_2\), \(H_1:\mu_1 eq\mu_2\)
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a study was done using a treatment group and a placebo group. the resul…
B. Fail to reject the null hypothesis. There is not sufficient evidence to warrant rejection of the claim that the two samples are from populations with the same mean.
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chases math teacher finds that theres roughly a linear relationship bet…
A student’s expected quiz score if they spent 1 hour on their homework.
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a study was done using a treatment group and a placebo group. the resul…
The test statistic \(t\) is \(-1.56\)
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a study was done using a treatment group and a placebo group. the resul…
C. \(H_0:\mu_1 = \mu_2\), \(H_1:\mu_1 eq\mu_2\)
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select the best evidence to support the statement that the narrator bel…
"Because here's the thing: Lonnie wouldn't tell me to jump unless he had a good reason."
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how many different ways can 12 racecars finish in first, second, and th…
1,320
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a certain 5 - digit combination lock can be reset with a new combinatio…
\(\frac{1}{7776}\) (the second option)
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your class is holding elections to choose a leadership committee of 4 s…
27,405
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a survey was taken of 400 shoppers. the shoppers were asked about purch…
\(18\)
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a data set includes times (in minutes) of taxi cab rides in new york ci…
- Test statistic: $- 1.68$ - P - value: $0.051$ - Conclusion: Since $0.051\leq0.10$, reject the null hypothesis. There is sufficient evidence at the $0.10$ significance level to s…
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a states license plates consist of 3 letters followed by 3 numbers. wha…
\(\frac{1}{17576000}\) (the third option)
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protection of habeas corpus means that citizens cannot be punished with…
citizens cannot be held without legal action.
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under fdr, the federal govt. embrased keyneisan economics, which means …
increase govt. spending in order to increase demand