Mr. Alex Liebrecht [emailprotected] Name:__________________________ Homework 6 Answer the following questions about confidence intervals. 1. Let's say that in a random sample of 80 college students, 32 of them signed up for Disney+. This study was done with the intention of learning how many college students nation wide signed up for Disney+. a. What is the sample and what is the population? b. Calculate the sample proportion (). c. Calculate the standard deviation for the sample proportion. d. Draw a bell curve based on the Empirical Rule (68 - 95 - 99.7). Mr. Alex Liebrecht [emailprotected] 1. (continued) Let's say that in a random sample of 80 college students, 32 of them signed up for Disney+. This study was done with the intention of learning how many college students nation wide signed up for Disney+. e. Find the critical value for a 90% confidence interval. f. What is a 90% confidence interval for the proportion of college students nation wide that signed up for Disney+. g. Can we conclude that less than half of college students signed up for Disney+ with 90% confidence? h. What is the margin of error for the confidence interval? i. Find the critical value for