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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formulate the indicated conclusion in nontechnical terms. be sure to ad…
There is not sufficient evidence to support the claim that the true proportion is greater than 21 percent.
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a fish is randomly drawn from a barrel with 10 green fish, 9 blue fish,…
0.71
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a random sample of students was surveyed and asked to list their grade …
6th - grade pets: \(23\); 7th - grade pets: \(10\); 7th - grade no - pets: \(26\); 7th - grade total: \(36\); 8th - grade no - pets: \(14\); Total no - pets: \(56\)
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a random sample of students were surveyed as to how much non - school s…
110
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you are dealt one card from a standard 52-card deck. find the probabili…
\(\frac{1}{52}\)
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question 2 of 7 (1 point) | question attempt: 1 of unlimited part 1 of …
6.10
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the scores and their percents of the final grade for a statistics stude…
91.2
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the lifetime of a certain type of battery is known to be normally distr…
1.96
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the lifetime of a certain type of battery is known to be normally distr…
120.1
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display the accompanying data in a stem-and-leaf plot. describe the dif…
The stem - and - leaf plot (with two rows per stem) is: | Stem | Leaf (0 - 4) | Leaf (5 - 9) | |------|--------------|--------------| | 7 | 2,2,4,4,4,4,4,4 | | | 8 | 0,0,0,0,0,2 |…
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part 1 of 2 points: 0 of 1 use a time series chart to display the data …
B
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9 what does it mean when something is arbitrary? it seems like an unusu…
It appears to be made in a random way.
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find the margin of error given the standard error and the confidence le…
12.374
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the desert surface of southern peru harbors an ancient mystery. massive…
Given that the Nazca lines emerged by revealing lighter soil beneath surface rocks, their creators likely had a sophisticated understanding of both local terrain features and larg…
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match the plot with a possible description of the sample. choose the co…
A. Wait time (in minutes) for a sample of doctors' offices
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a correlation coefficient indicates the linear fit between two variable…
-0.80 → The correlation coefficient indicates a strong negative correlation between two variables. 0.07 → The correlation coefficient indicates a weak positive correlation between…
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find the margin of error given the standard error and the confidence le…
1.645
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clauses: building and refining compound and complex sentences pre-test …
A. It describes the type of novel the speaker likes.
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1. an afterschool tutoring program began enrolling students 12 weeks ag…
8
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2) which members of the distribution chain does blockchain technology s…
a. Middlemen
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find the margin of error given the standard error and the confidence le…
0.258
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37. the function f(x) gives the cost in dollars of purchasing x identic…
A. The cost of 4 items is $10.
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find the margin of error given the standard error and the confidence le…
4.508
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the accompanying data set lists the retirement ages for 24 doctors. use…
(for the class with greatest increase in frequency): The class with the greatest increase in frequency is $65 - 69$.
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clauses: building and refining compound and complex sentences pre-test …
A. It describes the effect of the tall stone walls.
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4 multiple answer 3 points select all the words or phrases that mean le…
- First question: B. no more than, D. at most - Second question: C. at least, D. no less than
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look at the frame from one war ends, another begins. which excerpt from…
The first option (Later on arrived a shipload of supplies from the business people of New York, which were stored with the Galveston committee, and we were asked to aid in the dis…
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for each variable, determine whether it is best thought of as discrete …
(a) Discrete, (b) Discrete, (c) Continuous, (d) Discrete
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here is a sentence from the news story: in the street near the grand ca…
C. Special
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use the ogive to answer parts a) through d). male beagles cumulative fr…
40
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going to work: a news report stated that the mean distance that commute…
The probability that the sample mean commute distance is between 15 and 16 miles is approximately $\boxed{0.1085}$ (rounded to four decimal places).
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which two words from the news story have opposite meanings? a. make and…
C. Rise and fall
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for each variable, determine whether it is best thought of as discrete …
(a) Continuous; (b) Discrete; (c) Continuous; (d) Continuous
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use the ogive to answer parts a) through d). male beagles cumulative fr…
40
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use the ogive to answer parts a) through d). male beagles cumulative fr…
40
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for each variable, determine whether it is best thought of as discrete …
(a) Discrete; (b) Continuous; (c) Discrete; (d) Continuous
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variable (a) the score (either 0, 1, 2, or 3 with 0 being the worst and…
(a) Discrete; (b) Discrete; (c) Continuous; (d) Discrete
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within groups 380.263 9.054 total 475.970 the spss output for the contr…
P-value = 0.004, because for performing a one-sided test we have to divide the reported P-value by 2.
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identify the data sets level of measurement. the data listed on the hor…
nominal
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question 24 1 pts which sampling method is an example of a non - probab…
A. convenience
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watch your cholesterol: the mean serum cholesterol level for u.s. adult…
(a) The probability is $\boldsymbol{0.0188}$. (b) The probability is $\boldsymbol{0.0585}$. (c) It would not be unusual, with probability $\boldsymbol{0.1587}$.
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for each variable, determine whether it is best thought of as discrete …
(a) Continuous, (b) Continuous, (c) Continuous, (d) Discrete
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clauses: building and refining compound and complex sentences pre - tes…
- by addressing the reader - by combining ideas in a complex sentence - (the third correct option, after re - evaluation, the three are: by addressing the reader, by combining ide…
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twenty sheets of aluminum alloy were examined for surface flaws. the fr…
Probability: 0.4 Distribution: A. Poisson
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question 5 2 pts assume that a hypothesis test of the given claim will …
Reject the claim that the standard deviation is equal to 14.7 when it is actually 14.7.
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watch your cholesterol: the mean serum cholesterol level for u.s. adult…
\(0.0585\)
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watch your cholesterol: the mean serum cholesterol level for u.s. adult…
0.0188 (rounded to four decimal places)
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11/30/23, 7:48 am 15. the box - and - whisker plots below show the dist…
B. More boys than girls scored above 31 on the ACT, D. More boys than girls scored above 24 on the ACT
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select the correct answer. read this sentence from the speech. \tonight…
D. destroyed
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a sample of size 86 will be drawn from a population with mean 90 and st…
89.00 (or more precisely, approximately 88.99 - 89.00, but using Excel's calculation, it's approximately 89.00)
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find the value of the test statistic z using z = \\frac{\\hat{p} - p}{\…
O -2.88
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a sample of size 86 will be drawn from a population with mean 90 and st…
0.3497 (rounded to four decimal places)
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select the correct answer from the drop-down menu. read the excerpt fro…
The word "foundations" is first used to mean structure. Then, it is used again to mean core.
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question 1 2 pts express the null hypothesis and the alternative hypoth…
Question 1: $H_0: \mu = 23$, $H_1: \mu > 23$ Question 2: $\pm1.645$ (Note: If the last option was $\pm1.645$, that is the correct one; the visible options may have a typo, but sta…
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select the appropriate word or phrase to complete the sentence. part 1 …
equal to
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select the appropriate word or phrase to complete the sentence. part: 0…
standard error of the mean
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question 7 of 10 how was the agricultural adjustment act meant to help …
D. By raising crop prices
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read the excerpt from the crab that played with the sea. he went north,…
A. Things turn into geographical features of the Earth, such as the Himalayas, when the Eldest Magician blows on them. C. The animals engage in activities that are typical of thei…
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a city planner is studying the need for affordable housing in the citys…
- **(a)** - Population: All \(80,571\) households in the city. - Sample: The \(500\) randomly selected households. - **(b)** - Parameter: The \(82\%\) of all the households in the…
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some people believe that to truly understand and appreciate abstract ar…
3. It will argue for the importance of an individualized approach to interpreting art.
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read the passage from \the crab that played with the sea.\ ah! said the…
They describe Pau Amma’s impact on the sea and the animals.
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(b) choose whether each number described below is a parameter or a stat…
- Parameter: The \(61\%\) of all the full - time nurses at the hospital who prefer a four - day work schedule. - Statistic: The average of \(5.7\) sick days per year taken among a…
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evaluating the power of mass media and social media pre-test complete 1…
D. by encouraging people to strive for more education
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30 flowers are in a box. 8 of them are roses. what is the probability o…
0.07
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20 sandwiches are in a box. 11 of them are pb & j. what is the probabil…
0.30
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50 pencils are in a box. 8 of them are mechanical. what is the probabil…
0.03
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when a number is stated as a percentage, it means that the number repre…
D. 100
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evaluating the power of mass media and social media pre-test complete 1…
A. an excerpt from an interview with a new teen driver
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online lectures: the duration of online educational lectures on a learn…
(a) To find the probability that the sample mean is between 47.5 and 52, we use the sampling distribution of the sample mean. The mean of the sampling distribution \( \mu_{\bar{X}…
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25 pieces of fruit are in a bowl. 14 of them are apples. a piece of fru…
0.30
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question 8 of 10 what factors made it easier for women to change in the…
B. Changes in the law and social norms gave women greater opportunity.
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diane publishes a blog on bird - watching, with field notes and picture…
(a) Population: All the subscribers to Diane's blog; Sample: The 600 subscribers Diane polled. (b) - The average of 1.8 comments per blog that the 600 subscribers polled have post…
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a fruit is randomly drawn from a basket with 20 red apples, 6 green app…
0.60
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fill in the missing values in the table. round your responses for the e…
Expected frequency (In a church): 104.00 Expected frequency (Indoors but not in a church): 104.00 \( \frac{(f_O - f_E)^2}{f_E} \) (In a church): 16.163 \( \frac{(f_O - f_E)^2}{f_E…
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a sock is randomly drawn from a drawer with 8 long white socks, 6 long …
0.86
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online lectures: the duration of online educational lectures on a learn…
## Part (a) The probability that the mean length of this sample is between 47.5 and 52 is \(\boldsymbol{0.8848}\) (rounded to four decimal places). ## Part (b) It \(\boldsymbol{wo…
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1/10 label the store below as using either a distribution center or a f…
Distribution Center
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an item is randomly drawn from a bag with 16 fruit cups, 3 vegetable cu…
0.65
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a ball is randomly drawn from a bag with 6 green tennis balls, 18 red t…
0.85
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a population has mean \\( \\mu = 25 \\) and standard deviation \\( \\si…
$\mu_{\bar{x}} = 25$, $\sigma_{\bar{x}} = 0.6$
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ten words in context in the space provided, write the letter of the mea…
1. A. unmistakable 2. C. something that harms 3. A. to think up 4. C. to jumble 5. A. very thin 6. B. to be overly self - satisfied
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mandrake falls high school is providing a weekend course in laboratory …
Took the techniques course - Involved in no incident: 40.95 Took the techniques course - Involved in 2+ incidents: 12.87 Didn't take the techniques course - Involved in 2+ inciden…
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functions f and g represent the number, in thousands, of social media f…
Organizations f and g had an equal amount of followers in that year
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a marble is randomly drawn from a ba that with 5 blue marbles, 8 red ma…
$\frac{13}{20}$
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a shirt is randomly drawn from a bag with 14 small shirts, 19 medium sh…
0.83
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mong the literature on quitting smoking are data detailing the relative…
61.80, 126.00, 34.80
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question 43 1 pts baby ezra is babbling, producing intentional but mean…
B. seven months ### Question 44
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a fish is randomly drawn from a barrel with 10 green fish, 9 blue fish,…
0.71
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commute to work: megan drives to work each morning. her commute time is…
8:25
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a candy is randomly drawn from a box with 6 chocolates, 13 candy canes,…
0.57
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a candy is randomly drawn from a box with 6 chocolates, 13 candy canes,…
0.80
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although the words original meaning was flattering, it has come to ____…
4. connote
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ballots for a u.s. presidential candidate cast by eligible voters a cha…
1. popular vote 2. amendment 3. Electoral College 4. ratify 5. due process of law 6. Establishment Clause 7. principle 8. executive order 9. supermajority 10. propose
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enriques journey and \the children of the drug wars\ by sonia nazario a…
subtopics to be covered in the essay
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finding the probability of the complement of an event the age distribut…
59. $\frac{13971}{30569} \approx 0.46$ 60. $\frac{25276}{30569} \approx 0.83$ 61. $\frac{28153}{30569} \approx 0.92$ 62. $\frac{29173}{30569} \approx 0.95$
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fill in the blank: a ______ is a device that musicians use to practice …
- First question: Metronome - Second question: To slow down
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ashleys table for exercises 49–52 ages | frequency, f (in millions) ---…
49. ~0.092 50. ~0.267 51. ~0.254 52. ~0.165
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142 solve finding empirical probabilities a survey asked u.s. adults ho…
Exercise 47: $\frac{704}{1005}$ (or approximately 0.700) Exercise 48: $\frac{57}{1005}$ (or 0.057)
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question 9 1 pts a scatter plot is a visual representation of ○ the var…
the relationship between two variables. ### Question 10
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tempo means the speed of the: car beat symphony
B. Beat