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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proportion outside the interval: $31,000 to $67,000 the average startin…
Rule 4: $1 - [p(z_2)-p(z_1)] = 0.0456$ (Shade outside the 2 z - scores)
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step 4: interpret the final proportion the average starting salary is μ…
The proportion of starting salaries within a range of $30,000 to $70,000, from a normal distribution with $\mu = 49000$ ($\sigma = 9000$), is $p = 0.9727$.
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step 3: apply the rule & report the final proportion the average starti…
$p(z_{final}) = 0.9727$
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salary range: proportion within $30,000 and $70,000 the average startin…
Rule: Rule 1 $z_1$: - 2.11 $z_2$: 2.33
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question 14. a survey of how many minutes does it take you to eat break…
Follow the above - described steps to make the dot plot for the given data on the provided red - line.
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here is a regular stem - and - leaf plot (for a rather small data set):…
5 | 134 5 | 56668 6 | 00014 6 | 56678 7 | 0233344 7 | 56778 8 | 0024 8 | 5588 9 | 1 9 | 27
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you are being asked to convert this to an split stem - and - leaf plot.…
| Stem | Leaf (0 - 4) | Leaf (5 - 9) | |------|-------------|--------------| | 0 | 0, 0, 0, 0 | 7, 7 | | 1 | 1, 1, 1 | 2, 4, 4, 6, 6| | 2 | 0, 0, 2, 3, 3, 4, 4| 5, 5, 9 | | 3 | | …
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the table below shows the head size of 30 male soldiers in inches. the …
|Stems|Leaves| |----|----| |24|6| |25|1 8 9 0| |26|2 8 7 7 5 3 4 3 7 8| |27|1 0 3 2 1 3 0 5| |28|0 7 1| |29|0| |32|8|
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the histogram below displays the distribution of 49 ages at death due t…
35.3%
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the histogram below displays the distribution of 49 ages at death due t…
5.5%
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determine the distribution of the data pictured below. skewed - left sk…
Skewed - right
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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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question help: message instructor submit question frequency 1 2 3 4 5 1…
Skewed - left
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while working on a building in new york city, workers uncovered the rem…
D. artifacts
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a store surveyed 185 customers to find out their ages. the bar graph be…
The number of customers 24 years old or younger is 70. The percentage of 18 - 24 customers is approximately 21.6%.
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for the following distribution fill in the frequency distribution class…
| Class | Frequency | | ---- | ---- | | 0 - 9.9 | 4 | | 10 - 19.9 | 3 | | 20 - 29.9 | 10 | | 30 - 39.9 | 11 | | 40 - 49.9 | 8 |
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5. jada measures the growth of 10 tomato plants and lists the data in a…
$\frac{7}{8}$
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shane created a scatter - plot and drew a line of best fit, as shown. w…
C. $y=\frac{1}{2}x + 10$
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select the correct answer. the data from a survey on the academic degre…
C. 1601000
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for the following distribution fill in the frequency distribution class…
| Class | Frequency | | ---- | ---- | | 0 - 9.9 | 4 | | 10 - 19.9 | 2 | | 20 - 29.9 | 8 | | 30 - 39.9 | 10 | | 40 - 49.9 | 8 |
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a weather historian gathered data about the average temperature and tot…
When the average temperature is $0^{\circ}F$, the total snowfall is around 18.5 inches. There is a strong negative association between average temperature and total snowfall becau…
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select the correct answer. the developer of a new plant fertilizer gath…
D. Yes, because the correlation coefficient is closer to 1 than to 0, which indicates a strong association between the variables
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a group of students were surveyed about what they want to be when they …
33 12 26
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select the correct answer. nancy drew lines of best - fit for two scatt…
D. Neither line A nor line B is a well - placed line of best fit.
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in rodericks song \the haunted palace\ the narrator says he first perce…
8) The narrator means Roderick's reason is failing. The song tells a story of a once - grand place now in decay. It suggests Roderick is close to madness. 9) Roderick believes the…
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select the correct answer. a pharmaceutical company claims that the use…
B. 21%
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select the correct answer. a frozen yogurt stand offers three flavors o…
C. The owner should use fruit as the mixed - in topping
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the employees of a company were asked to choose their favorite food. th…
An equal number of female employees chose burgers and hot dogs as their favorite food. A greater number of male employees chose pizza as their favorite food than the female employ…
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question 5. the following data set outlines the scores students had on …
| Score | Frequency | | ---- | ---- | | 40 - 49 | 3 | | 50 - 59 | 1 | | 60 - 69 | 3 | | 70 - 79 | 4 | | 80 - 89 | 2 | | 90 - 99 | 3 |
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select the correct answer. maya collected data about the number of ice …
B. 89
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select the correct answer. nikki gathered data about the length of time…
C. 63
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which phrase best describes the relationship indicated by the scatter p…
D. no correlation
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if a data line on a graph slopes upward as it goes to the right, it is …
C. the relationship between the variables on the axes is positive.
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the plot above shows the number of computers a store sold the first fou…
Total computers sold: 22 Computers sold on Tuesday: 8 Percentage of computers sold on Tuesday: 36.4% Percentage of computers sold on Monday or Tuesday: 50.0%
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the pie chart below shows a companys expenditures in the last quarter. …
Travel
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select the correct answer. the data from a survey on the academic degre…
B. 2.87%
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a group of adults were asked how many children they have in their famil…
Approximately 19.23%
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identify which of the following microeconomic topics can have an impact…
d. How do people decide how much to save for the future, or whether they should borrow to spend beyond their current means?
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a survey of ninth - grade students at a high school was conducted to de…
In the table, from top - to - bottom, left - to - right: 2, 20, 3; 50
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type the correct answer in the box. use numerals instead of words. maso…
| | Pencils | Pens | Total | |--|--|--|--| | Male | 40% | 10% | 40% | | Female | 30% | 20% | 60% | | Total | 70% | 30% | 100% |
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trevor drew lines of best fit for two scatter plots, as shown. which st…
A. Only line A is a well - placed line of best fit
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name: dorian ellis hour: 6 directions: using the text and your annotati…
1. The narrator feels dread and unease. The house's decay, isolation, and atmosphere cause these feelings. 2. The narrator comes due to a letter from Roderick asking for company. …
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the owner of a fruit stand gathered data for a week about the number of…
A. only plot A
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what is the strongest relationship you can infer between two variables …
A. causation
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pretest: bivariate data favorite course math english history science to…
B. I, III and V
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memberships in the restaurants rewards program. the data and the line o…
A. Yes, because the points in the plot are all very close to the line, which indicates a strong association
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drag the tiles to the correct boxes to complete the pairs. not all tile…
percentage of students who prefer comedies that are male: 27.2% percentage of students who prefer action moves that are female: 18.9% percentage of female students who prefer sci …
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residents of four cities are able to vote in an upcoming regional elect…
B. III only
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select the correct answer. a florist gathered data about the weekly num…
C. 87
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select the correct answer. an auto insurance company conducted a study …
D. 26%
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the equation of the line of best fit is y = - 2.1x + 565.6. based on th…
A. 162 seconds
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amber created a scatter plot and drew a line of best fit, as shown. wha…
C. $y=\frac{1}{3}x + 12$
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select the correct answer a geologist gathered data about the total sho…
D. 143 feet
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a movie - producer conducted a survey after the screening of his movie …
C. The majority of the audience in the 16 - 25 age group liked the movie
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select the correct answer. charlie gathered data about the time it take…
D. No, because the correlation coefficient is closer to 0 than to 1, which indicates a weak association between the variables
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the table below shows the favorite movie theater snack for adults and c…
3/25
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the table below shows the favorite movie theater snack for adults and c…
A. 4/5
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the table below shows the favorite movie theater snack for adults and c…
2/25
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the table below shows the favorite movie theater snack for adults and c…
1/5
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the table below shows the favorite movie theater snack for adults and c…
$\frac{7}{10}$
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the table below shows the favorite movie theater snack for adults and c…
C. 1/10
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the table below shows the favorite movie theater snack for adults and c…
1/25
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the table below shows the favorite movie theater snack for adults and c…
B. 3/10
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the table below shows the favorite movie theater snack for adults and c…
$\frac{2}{5}$
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the table below shows the favorite movie theater snack for adults and c…
3/50
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multiple choice 3 points. this excerpt is from the \declaration of sent…
1. natural rights 2. Capitalism: Private Ownership, Profit Motive, Competitive Markets; Communism: State Ownership of All Property, Classless Society, Income Redistribution
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read the chart. homophone meaning by beside or near buy to purchase som…
A. by, buy
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read the meanings of the word bolt, then read the sentence. definition …
C. Definition 3
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how does adding the affix -etic to the words energy, athlete, and poet …
It changes them from nouns to adjectives.
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if retro means \back\ and spec means \to see or look,\ what is the best…
D. in considering the past
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a jar contains 5 red marbles, numbered 1 to 5, and 11 blue marbles numb…
a) $\frac{1}{5}$ b) $0$
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alonso has a bag of marbles with 4 blue marbles, 3 white marbles, and 4…
a) $\frac{8}{55}\approx0.1455$ b) $\frac{6}{55}\approx0.1091$ c) $\frac{4}{165}\approx0.0242$
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furnell buys a bag of cookies that contains 6 chocolate chip cookies, 8…
0.0580
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round all answers to 4 decimal places. a. a bag contains 5 green marble…
a. $0.0868$ b. $0.0815$
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there are 6 white and 2 orange ping - pong balls in a brown paper bag. …
a) 8 b) 0.250 c) 0.143 d) 0.036
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study the table, which shows the meanings of common homophones. homopho…
1. they're 2. their
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a home pregnancy test was given to women, then pregnancy was verified t…
a. $0.9394$ b. $0.9254$ c. $0.0606$ d. $0.9375$
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a test was given to a group of students. the grades and gender are summ…
$0.696$
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read the sentence and study the table. when you park on a hill, it is w…
Which homophone correctly completes the sentence? brake Which word provides a context clue that supports your answer? stationary
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using a suffix to determine meaning. read the sentence and study the ta…
requiring effort
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read the sentence and study the table. the womens club held fundraisers…
twice a year
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graduated licensing is meant to ease teens into driving so that they ca…
True
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a 2010 pew research poll asked 1,306 americans from what youve read and…
a) not mutually exclusive b) \(0.31\) c) \(0.69\) d) \(0.7353\) e) belief in global warming and party ideology are dependent f) \(0.6061\)
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research question: based on the three anchor text, which text best defi…
There is not enough information provided to determine which text best defines what it means to be an American today. One would need to analyze the three anchor texts to answer thi…
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12. the senates role of providing \advice and consent\ means it has the…
12. confirm 13. investigate 14. impeach 15. A subpoena is a legal order compelling a person to appear and give testimony or produce documents.
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how does the audience for moras speech differ from the audience for her…
The speech can reach only a small group of students, but because the essay is a published text, it can reach a broad, general audience.
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2. aviation the graph shows the results of a survey that asked 4300 stu…
The range is from 8104000 to 10504000 students.
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according to masterfoods, the company manufactures m&m’s, 12% of peanut…
a. $0.8500$ b. $0.3800$ c. $0.0529$ d. $0.4644$ e. $0.5356$
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a couple plans to have three children. what is the probability that a) …
a) $\frac{1}{8}$ b) $\frac{7}{8}$
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in a large population, 52% of the people have been vaccinated. if 5 peo…
$0.9745$
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you toss a fair coin 4 times. what is the probability that (round to 4 …
a) 0.0625 b) 0.9375
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the spinner below is spun twice. if the spinner lands on a border, that…
1. $\frac{1}{12}$ 2. $\frac{1}{6}$ 3. $\frac{4}{9}$
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a die is rolled twice. what is the probability of getting a 1 on the fi…
$0.0833$
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a quick quiz consists of a multiple - choice question with 5 possible a…
3.33
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suppose that 50% of people own dogs. if you pick two people at random, …
$0.2500$
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a dice is rolled 4 times. what is the probability of showing a 3 on eve…
0.0008
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a coin will be tossed twice. let e be the event \the first toss shows h…
(a) Yes (b) $\frac{1}{4}$
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a and b are independent events. use the following probabilities to answ…
$0.0408$
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events a and b are independent events. find the indicated probability. …
$0.12$
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the job of the courts the interpretation of the laws is the proper and …
Courts should interpret laws and the Constitution.