Private nonprofit four-year colleges charge, on average, $27,647 per year in tuition and fees. The standard deviation is $7,041. Assume the distribution is normal. Let X be the cost for a randomly selected college. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X~ N( b. Find the probability that a randomly selected Private nonprofit four-year college will cost less than 30,678 per year. c. Find the 75th percentile for this distribution. $ (Round to the nearest dollar.)

Q: a. Find the probability that none of the selected adults say that they were too young to get…

A: GivenProbability say they were too young when they got their tatoos(p)=0.24sample size(n)=6Let "x"…

Q: In the country of United States of Heightlandia, the height measurements of ten-year-old children…

A: Given,mean(μ)=55.8standard deviation(σ)=9

Q: Women athletes at a certain university have a long-term graduation rate of 67%. Over the past…

A: "We will solve the first three subparts of the question for you. If you want any specific question…

Q: Consider a sample with M = 16 and s2 = 25. A researcher is testing the null hypothesis that µ = 20.…

A: The answer is attached below,

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 8.9…

A: Given: Population meanμ=8.9Standard deviationσ=2.9

Q: Giving a test to a group of students, the grades and gender are summarized below   A B C Total…

A: The sample size is n=102. The favorable cases (the number of non-binary students who receive a grade…

Q: Claim: μ₁ = ₂; x = 0.05. Assume o 0 ² = 0²/2 1 Sample statistics: x₁ = 33.3, s₁ = 3.5, n₁ = 13 and…

A: Givenclaim is μ1=μ2α=0.05Assume σ12=σ22Mean(x1)=33.3standard deviation(s1)=3.5sample…

Q: A random sample of 46 adult coyotes in a region of northern Minnesota showed the average age to be x…

A: "Since you have posted a question with multiple sub-parts, we'll solve the first three sub-parts for…

Q: Stratified sampling 1. Can be more representative than simple randomized sampling II. Can be used if…

A: When the underlying population is equally divided into groups that have same properties or based on…

Q: 4(x + y) 5x³ f(x, y) = Let pdf with 14]=16 then the value of A which make this probability true is…

A: Answer.     B.  1/12

Q: find the standard deviation (s) for the following data set using step by step approach: 896 833 681…

A: The given data is  896 833 681 807 730 934 819

Q: A sample of n = 4 scores has SS = 60. Which is the variance for this sample? Group of answer choices…

A: Given N=4 SS=60

Q: The Bayside Fountain Hotel is adjacent to County Coliseum, a 24,000- seat arena that is home to the…

A: The given data is: .

Q: Twenty patients sampled at random were matched by age and BMI. One of each pair was assigned at…

A: Given: Existing treatment  15.5  5   8.5  10.6  12.5   6.5  8.4  10.5  8  10 New statement       14…

Q: p. Find the probability that a randomly selected bag of marijuana sold on the street will have a THC…

A: Given that.   X~N( μ , ?^2 )   μ=9.1     , ?=1   Z-score =( x - μ )/?

Q: At what percentile is the child's reading level (round final answer to one decimal place). b.…

A:

Q: Question 7 ▼ The amount of coffee that people drink per day is normally distributed with a mean of…

A: Let X be the random variable from normal distribution with mean (μ) = 16, standard deviation (σ) = 5…

Q: identify which variables are categorical and which are quantitative: a) Gender b) Age c) Income d)…

A: Here we used the concept of scale ( like nominal, ordinal interval and ratio) to identify the types…

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 10.1…

A:

Q: er true or false to each statement concerning a confidence interval for a population mean. Give…

A:

Q: A pipes manufacturer makes pipes with a length that is supposed to be 16 inches. A quality control…

A: Givenmean(x)=16.07standard deviation(s)=0.11sample size(n)=13α=0.005

Q: In a study of statistics professors' salaries (USA) the following data was obtained: n=16,…

A: Givensample size(n)=16Mean(x)=105000standard deviation(s)=13000Confidence interval = 95%

Q: He scores higher than what percent of all adults? What if his score were 95? Find the value for Z…

A: here given , The scores of adults on an IQ test are approximately normal with mean 100 and standard…

Q: part D E F

A: Sample size n = 25 Formula Used: Confidence interval = X ± tsn

Q: A population of values has a normal distribution with μ=193μ=193 and σ=67.8σ=67.8. You intend to…

A: Given dataμ=193σ=67.8n=97

Q: On a planet far far away from Earth, IQ of the ruling species is normally distributed with a mean of…

A: Given that.   X~N( μ , ?^2 )   μ=114    , ?=16   Z-score =( x - μ )/?   NOTE:- According to bartleby…

Q: Sixty-one students were asked at random how much they spent for classroom textbooks this semester.…

A: Given,margin of error(E)=7standard deviation(s)=28.70α=1-0.99=0.01α2=0.005Z0.005=2.58     (from…

Q: Suppose that the amount of time that students spend studying in the library in one sitting is…

A: "Since you have posted a question with multiple subparts, given 3 solved question so we have solved…

Q: Based on the following payoff table, answer the following: Buy Rent A) 69. B) 57. C) 90. Lease Prior…

A: The following payoff table is given: Alternative  High Low Buy 90 -10 Rent 70 40 Lease 60…

Q: nsider a country in which three goods (A, B, and C) are produced. The following table shows data for…

A: Quantities produced Unit prices         Q1 Q2 P1 P2 Good A 51 45 10 14 Good B 23 54 10 6…

Q: with x,y=1,2,3,...,

A: Given as, fx=4xyn2 n-12

Q: A car leasing firm's records indicate that the mean number of miles driven annually in its cars has…

A: GivenA car leasing firm's records indicate that the mean number of miles driven annually in its cars…

Q: For a standard normal distribution, find: P(-0.42 < z < 1.77)

A: GivenP(-0.42&lt;z&lt;1.77)

Q: The Admissions Office at a small university has developed a new 10-minute video about the university…

A: Given that: A fresh 10-minute film promoting the institution was created by the admissions office of…

Q: 1 b) For any data set, approximately 95% of the observations fall in the interval (T − 2s, T+2s).…

A:

Q: You wish to test the following claim (HaHa) at a significance level of α=0.05α=0.05.…

A: Given that  Sample size n =10 mean M=77.3 and a standard deviation of SD=19.4

Q: b. Calculate the 50th percentile. invNorm(.50, 28.7, 2.1) = 28.7 c. Calculate the 81st percentile.…

A: Given data: 28.7,2.1

Q: Given the standard normal distribution, find ZZ such that P(z<Z)=0.988P(z<Z)=0.988

A: Given the standard normal distribution of P(z&lt;Z)=0.988

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: The population proportion is 76%; p=0.76 Margin of error is 2.5%; Margin of error=0.025…

Q: 2. For the following information on a data set: Measurement Class .00- .75 .75-1.50 1.50-2.25…

A:

Q: "Trydint" bubble-gum company claims that 9 out of 10 people prefer their gum to "Eklypse". Test…

A:

Q: Let X denote the number of times a certain numerical control machine will malfunction: 1, 2, or 3…

A: Given data is  f(x,y) y 1 2 3 Total x 1 0.10 0.05 0.02 0.17 2 0.10 0.35 0.05 0.50 3 0.03…

Q: Can we use a parametric test or non-parametric test if we wanted to analyze two data sets with the…

A: The parametric test relies upon whether the information can be thought to be typically conveyed. On…

Q: If I have a sample of 20 people what is my T-threshold for a two-tail test and an alpha of 0.1…

A: Given: Sample size (n)=20 Level of significance α=0.1%=0.001 Test is two tailed.

Q: The following table shows the number of active military personnel in 2009, by region (including the…

A: Given Information: Pacific 229,634 Mountain 89,816 West South Central 177,336 West…

Q: A washing machine manufacturer advertises that the median life of the machines is at least 8 years.…

A: From the information, observe that a washing machine manufacturer advertises that the median life of…

Q: When α= 0.10 and n=30 ,   χ2left =     χ2right =

A: Given that α=l.o.s.=0.10 n=30

Q: It is possible for the probability of a Type I error (p-value) obtained from a t-test to be 0. Group…

A:

Q: The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that…

A: The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that…

Q: This answer is wrong.  I need the following:  Enter your answer as a number accurate to 1 decimal…

A: The  mean is 5.8 and the standard deviation is 1.