Private Four-Year Colleges From the data in CollegeScores4yr we know that about 62% of four-year colleges in the US are privateinstitutions. Suppose that we select samples of n = 75 schools at a time from the population of all four-year colleges and find theproportion of private schools in each sample.(a) Consider the distribution of these sample proportions when n = 75 and p = 0.62.What is its form?Center = iStandard error =(round to three decimal places)(b) What proportion of these samples will have less than 50% private schools? Round to three decimal places.i Use the normal distribution to find a confidence interval for a proportion p given the relevant sample results. Give the best pointestimate for p, the margin of error, and the confidence interval. Assume the results come from a random sample.A 90% confidence interval for p given that p = 0.7 and n = 120.Round your answer for the point estimate to two decimal places, and your answers for the margin of error and the confidence intervalto three decimal places.Point estimate =Margin of error = + iThe 90% confidence interval is ito

( 1 ) Given that n=75,p=0.62 (a) Form=? Center =? Standard error = ? ( b )P(p hat < 0.50 ) =? ( 2…

Answered: Private Four-Year Colleges From the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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et's look at attendance between the two leagues and draw some conclusions. For purposes parts D and E, we are assuming that separating the data into 2 groups based on League is considered sampling; thus, we have 2 samples (American League and National League) and assume we do NOT know the population standard deviations for both "populations" (we only have 1 overall population, not 2). What was the average attendance in each league? Round your answer to 3 decimal places. American League average attendance mil National League average attendance mil space space Perform a hypothesis test to determine whether there is a difference in the mean attendance of teams in the American League vs teams in the National League. Use a 0.05 level of significance in your testing procedures. Additionally: You will need to know the standard deviations and variances for attendance in each league to conduct this test. We are assuming that both American and National League attendance…
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< Prev Question 7 of 23 Step 1 of 1 The grades on the second statistics test for Mrs. Sweeney's class are in the following list. Find the frequency distribution for the grades. A, D, D, C, B, D, D, F, B, B, B, B, D, D, D, F, B, B, D, B, B Grade A frequency= Grade C frequency= Grade F frequency= Grade B frequency= 01:26:29 Grade D frequency= Keypad Keyboard Shortcuts Next
Is the racial distribution for students on work study different from the racial distribution for students not on work study? The results of a recent study are shown below. Frequencies of Race for Students On and Not On Work Study White Black Hispanic Asian Other Work Study 77 41 96 50 24 Not Work Study 70 79 86 73 30 α = 0.10 significance level The test-statistic for this data = (Please show your answer to three decimal places.) The p-value for this sample = (Please show your answer to four decimal places.) Thus, the final conclusion is... There is sufficient evidence to conclude that race and work study status are dependent. There is insufficient evidence to conclude that race and work study status are dependent. There is sufficient evidence to conclude that the racial distribution for students on work study is not the same as it is for students not on work study. There is insufficient evidence to conclude that the racial distribution for students on work study…
Choose all of the correct responses that answer the following question. What is the purpose of using random sampling (as opposed to non-random sampling) when we want to use a sample to learn something about a population? Random sampling produces a distribution that tends to have equal (proportional) representation from all groups. Random sampling allows the researcher to choose those individuals that will best represent the population. Random sampling allows everyone in population equal opportunity of being selected. O Random sampling avolds sampling bias and produces a sample that represents the patterns found in the population. Random sampling allows the researcher to convenlently gather participants that are easy to access

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