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GoFullPage Edit PDF E - 22 - Section 6.1 Inference for a Proportion Question 1 of 16 _ /1 ;: View Policies Current Attempt in Progress impact of Sample Size on Accuracy Compute the standard error for sample proportions from a population with proportion p = 0.35 for sample sizes of n = 20, n = 250, and n = 900. Round your answers to three decimal places. Sample Size Standard Error n = 20: n n = 250: I n = 900: I eTextbook and Media Save for Later Attempts: 0 of 4 used - 22 - Section 6.1 Inference for a Proportion Question 3 of 16 > - 11 5 View Policies Current Attempt in Progress Is a Normal Distribution Appropriate? In each case below, is the sample size large enough so that the sample proportions follow a normal distribution? (a) n = 600 and p = 0.2 O Yes ON e Textbook and Media (b) n = 15 and p = 0.7 O Yes O No e Textbook and Media (c) n = 40 and p = 0.1 O Yes O No e Textbook and Media (d) n = 120 and p = 0.87 O Yes O No e Textbook and Media Save for Later Attempts: 0 of 4 used Submit Answer6 22 - Section 6.1 Inference for a Proportion Question4of16 _/1 View Policies Current Attempt in Progress Public TwoYear Colleges From the data in CollegeScoresZyr we know that about 66% of two-year colleges in the US are public institutions. Suppose that we select samples of n = 90 schools at a time from the population ofall two-year colleges and nd the proportion of public schools in each sample. (a) Consider the distribution of these sample proportions when n = 90 and p = 0.66. What is its form? Center = a Standard error = a (round to three decimal places) (b) What proportion of these samples will have more than 75% public schools? Round to three decimal places. eTextbook and Media Save for Later Attempts: 0 of 4 used