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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what is a countrys income distribution? (1 point) distribution of total…
distribution of total GDP among the total population
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poverty and resource distribution quick check in the united states, the…
are earning a household income that is less than the threshold set by government
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forty fans of reality tv were asked to rate four shows, and the data be…
| Show | Frequency | |------|-----------| | A | 5 | | B | 9 | | D | 7 | | S | 19 |
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find the mode for the data items in the given frequency distribution. s…
A. The mode(s) is/are 7.
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forty fans of reality tv were asked to rate four shows, and the data be…
| Show | Frequency | | ---- | ---- | | \(A\) | \(3\) | | \(B\) | \(8\) | | \(D\) | \(6\) | | \(S\) | \(23\) |
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in one common system for finding a grade - point average, or gpa, $a = …
2.77
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a questionnaire about how students primarily get news resulted in the f…
| Source | Frequency | | ---- | ---- | | I (Internet) | 9 | | N (Newspaper) | 8 | | R (Radio) | 9 | | T (TV) | 9 |
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a questionnaire about how students primarily get news resulted in the f…
| Source | Frequency | | ---- | ---- | | I (Internet) | 10 | | N (Newspaper) | 11 | | R (Radio) | 7 | | T (TV) | 7 |
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at a college financial aid office, students who applied for a scholarsh…
| Rank | Frequency | |------|-----------| | FY | 14 | | So | 5 | | Jr | 7 | | Se | 3 |
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are phone calls equally likely to occur any day of the week? the day of…
Chi-square goodness-of-fit test ### Part c
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at a college financial aid office, students who applied for a scholarsh…
| Rank | Frequency | |------|-----------| | \( FY\) | \( 11\) | | \( So\) | \( 6\) | | \( Jr\) | \( 7\) | | \( Se\) | \( 6\) |
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here is a table showing all 52 cards in a standard deck. a five - card …
\(0.27\)
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this exercise refers to a poker hand consisting of 5 cards dealt at ran…
\(0.0000015\)
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a false premise is best defined as \the contradiction between what is s…
"an incorrect assumption that forms the basis of an argument"
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in one lottery game, contestants pick five numbers from 1 through 22 an…
\(\frac{1}{26334}\)
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a combination lock has 50 numbers from zero to 49, and a combination co…
\(0.055\)
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a four - digit identification card is made. find the probability that t…
\(0.00180\)
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a physical therapist is scheduling appointments for the day. they have …
\(0.43290\)
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find the probability of getting any five - digit number where all the d…
\(0.0001\)
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marfena created a table of values representing the height in feet, ( h(…
The values of h(t) when t=4 and 5 should be 0
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an engineering company has four openings and the applicant pool consist…
\(0.098\)
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an engineering company has four openings and the applicant pool consist…
\(0.098\)
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in a class of 17 students, there are 10 men and 7 women. four students …
\(0.39706\)
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in a class of 17 students, there are 10 men and 7 women. four students …
\(0.14706\)
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in a class of 17 students, there are 10 men and 7 women. four students …
\(0.35294\)
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mariana created a table of values representing the height in feet, ( h(…
None of the given options are correct. But if we assume there is a typo in the table (maybe \(h(0)\) was mis - presented as 210 instead of 190 in the option's context error), and …
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after recording the pizza delivery times for two different pizza shops,…
(Note: Since full options are not visible, the correct reasoning is to choose the first shop (mean 46, SD 2) for reliable delivery times. If the visible option A is incorrect (as …
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in a class of 17 students, there are 10 men and 7 women. four students …
\(0.01471\)
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decide whether the following statement makes sense (or is clearly true)…
A. The statement makes sense because the range of data for the heights of a group of 5-year-old children is larger than the range of data for the heights of a group of children wh…
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in a class of 17 students, there are 10 men and 7 women. four students …
\(0.08824\)
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a city council consists of 10 members. four are republicans, three are …
(a) \(0.03333\) (b) \(0.00833\) (c) \(0.30000\) (a) of part 4 \(0.07500\) (a) of part 5 \(0.15000\)
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a city council consists of 10 members. four are republicans, three are …
\(0.07500\)
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a city council consists of 10 members. four are republicans, three are …
\(0.30000\)
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a city council consists of 10 members. four are republicans, three are …
\(0.3\)
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describe the process of calculating a standard deviation. give a simple…
1.483; 0
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a city council consists of 10 members. four are republicans, three are …
\(0.00833\)
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a city council consists of 10 members. four are republicans, three are …
\(0.03333\)
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in a company there are seven executives: four women and three men. thre…
\(0.51429\)
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in a company there are seven executives: four women and three men. thre…
\(0.34286\)
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in a company there are seven executives: four women and three men. thre…
\(0.02857\)
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in a company there are seven executives: four women and three men. thre…
\(0.11429\)
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decide whether each of the following statements makes sense (or is clea…
A. The statement does not make sense because an outlier with a large value decreases the mean, but does not affect the median. (Note: The correct reasoning contradicts option A, b…
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a student - faculty government committee of 4 people is to be formed fr…
\(0.45470\)
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a student - faculty government committee of 4 people is to be formed fr…
\(0.34103\)
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what is meant by the shape of your data? choose the correct answer. a. …
B. A column chart (histogram) showing how many values lie in given intervals or bins
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select the correct choices that complete the following sentences. a fre…
First blank: histogram Second blank: bin (or class, but if adhering to common terminology for grouped data in this context, bin is appropriate) Wait, let me recheck. The original …
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a student - faculty government committee of 4 people is to be formed fr…
\(0.34102\)
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a student - faculty government committee of 4 people is to be formed fr…
\(0.17949\)
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find the probability the roll was a (a) sum of 12. the probability the …
\(\frac{1}{12}\)
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during a charity las vegas casino night, rosie plays craps and gets to …
\(\frac{1}{2}\)
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which of the following is an example of a speaker using pacing to creat…
C. A teacher quickly lists all the tasks required for a project to highlight its complexity and help learners grasp the full scope.
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during a charity las vegas casino night, rosie plays craps and gets to …
\(\frac{1}{36}\)
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6. a card flip. for each of the given tasks, randomly pick a single car…
\(\frac{3}{4}\)
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in a game show, the two of the game show contestants pick a single card…
\(\frac{2}{13}\)
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select the correct choices that complete the following sentences. the o…
The distribution of your data refers to a histogram showing how many values lie in given intervals or bins. The more common shapes are: i. Normal data is bell-shaped with most dat…
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akita wants to purchase that all - important first new car and can sele…
The sample space is \(\{FYB,FYC,FEB,FEC,HYB,HYC,HEB,HEC\}\)
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a coin flip determines who gets the ball first at the beginning of a fo…
(d) \(\frac{15}{16}\) (e) \(\frac{15}{16}\)
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a coin flip determines who gets the ball first at the beginning of a fo…
\(\frac{1}{16}\)
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a coin flip determines who gets the ball first at the beginning of a fo…
(a) \(\frac{1}{4}\) (b) \(\frac{1}{16}\)
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three computers are chosen at random from an inventory of dell and acer…
\(\frac{3}{7}\)
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three computers are chosen at random from an inventory of dell and acer…
\(\frac{3}{7}\)
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three computers are chosen at random from an inventory of dell and acer…
\(\frac{1}{8}\)
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(a) the 2011 baseball team at ohio state university consisted of 12 fre…
(a) \(820\) (b) \(1640\)
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part 1 of 2 (a) the 2011 baseball team at ohio state university consist…
(a) \(820\) different ways. (b) \(1640\) different ways.
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steve wants to download a selection of new music. how many ways can ste…
\(132300\)
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the circle graph shows how a family budgets its annual income. if the t…
\boxed{9750}
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part 1 of 2 how many ways can a student pick five questions from an exa…
Part 1: \(462\) ways. Part 2: \(84\) ways.
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in 5 - card poker, each player is dealt 5 cards (go figure) from a stan…
\(2598960\)
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mini - practice exam 2 question 4 of 5 (28 points) | question attempt: …
To compute the test value (t - value) for a two - sample t - test (assuming this is a two - sample scenario with population means \(\mu_1\) and \(\mu_2\)), we need the following i…
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variables are normally distributed and the variances are unequal. whiti…
\( H_0: \boldsymbol{\mu_1=\mu_2} \) (not claim), \( H_1: \boldsymbol{\mu_1 eq\mu_2} \) (claim) (or \( H_1: \boldsymbol{\mu_1 > \mu_2} \) if one - tailed). This hypothesis test is…
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ages of homes whiting, indiana leads the \top 100 cities with the oldes…
Null hypothesis: \( H_0: \mu_1 = \mu_2 \) (The average age of houses in Whiting is equal to that in Franklin) Alternative hypothesis: \( H_1: \mu_1 > \mu_2 \) (The average age of …
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refer to the accompanying scatterplot. the four points in the lower lef…
a. A. There does not appear to be a linear correlation because the points do not form a line. b. B. There does not appear to be a linear correlation because the points do not form…
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refer to the accompanying scatterplot. the four points in the lower lef…
A. There does not appear to be a linear correlation because the points do not form a line.
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listed below are the overhead widths (in cm) of seals measured from pho…
less; is not
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(d) which interval is larger? why? the % confidence interval is larger.…
The 95% confidence interval is larger. An interval with a 95% range of values than the 90% confidence interval will be more likely to contain the true population mean.
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(c) find the 99% confidence interval of the mean of these pounds. round…
The 99% confidence interval is larger. An interval with a wider range of values than the (usually 95%) confidence interval will be more likely to contain the true population mean.
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(b) find the 95% confidence interval of the mean of these pounds. round…
\(30.6 < \mu < 33.4\)
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listed below are the overhead widths (in cm) of seals measured from pho…
Scatterplot: (Assuming B matches the positive trend; exact graph not visible, but r calculation is 0.832) Linear correlation coefficient: 0.832 Critical values: ±0.917 Sufficient …
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listed below are the overhead widths (in cm) of seals measured from pho…
Scatterplot: (Assuming correct graph matches the data trend; since graphs are not visible, typical trend is positive association) Linear correlation coefficient \(r ≈ 0.83\) Criti…
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overweight men for a random sample of 60 overweight men, the mean of th…
The 95% confidence interval is \( 30.9 < \mu < 33.1 \)
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part: 1 / 4 part 2 of 4 (b) find the 95% confidence interval of the mea…
To find the 95% confidence interval for the population mean \(\mu\), we typically use the formula for a confidence interval when the population standard deviation \(\sigma\) is un…
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refer to the accompanying scatterplot. a. examine the pattern of all 10…
a. (Assuming initial perception: No strong correlation, but with the outlier, it may seem weak; exact answer depends on full plot, but typical for such problems: No strong correla…
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overweight men for a random sample of 60 overweight men, the mean of th…
32
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refer to the accompanying scatterplot. a. examine the pattern of all 10…
b. r=0.893; B. Yes, because the correlation coefficient is in the critical region. c. r=0; B. No, because the correlation coefficient is not in the critical region.
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refer to the accompanying scatterplot. a. examine the pattern of all 10…
a. No b. r = 0.893; B. Yes, because the correlation coefficient is in the critical region. c. r = 1.000 (approximate, typical for clustered points without outlier)
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refer to the accompanying scatterplot. a. examine the pattern of all 10…
a. Yes b. r=0.893; B. Yes, because the correlation coefficient is in the critical region.
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refer to the accompanying scatterplot. a. examine the pattern of all 10…
No
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use the given data set to complete parts (a) through (c) below (use \\(…
D. There is sufficient evidence to support the claim of a linear correlation between the two variables. ### Part (c)
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suppose that the probability a seed will germinate is 80%. what is the …
D. 0.201
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a drawer contains 3 red paperclips, 4 green paperclips, and 5 blue pape…
A. Independent - the first paper clip is replaced, the sample space of 12 paperclips does not change from the first event to the second event
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in taking a multiple - choice test, there are four possible answers for…
B. 0.25
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in the following experiment, determine whether or not the probabilities…
B. Binomial probability; \(n = 30\), \(p = 0.5\), \(q = 0.5\)
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which of the following is not a binomial experiment? a. asking 100 peop…
C. Asking 100 people what their favorite color is.
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suppose that the probability of a dvd player that was manufactured in a…
A. 0.0019
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at a manufacturing plant where switches are made, it is a known fact th…
B. 0.0392
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if you roll a pair of dice 100 times over the course of a game, what is…
C. 0.00463
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consider this claim: daylight saving time should be abolished. which is…
A study from the National Bureau of Economic Research found that turning the clocks forward in the spring increased energy consumption, contradicting the popular belief that dayli…
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can you answer each question and type the * correct code? please rememb…
BIEF
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question a random sample of students were surveyed as to how much non -…
50%
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a disc jockey at a school dance has equal numbers of rock and country s…
C. Number cube Let even number = rock Let odd number = country Roll cube three times. Repeat.