Do college students prefer printed textbooks to electronic textbooks? You work for a textbook publisher and want to estimate the population proportion of all college students who prefer printed textbooks to electronic textbooks. So, you will survey a random sample of 95 college students. Follow the steps below to construct a 99% confidence interval for the population proportion of all college students who prefer printed textbooks to electronic textbooks. (If necessary, consult a list of formulas.) (a) Click on "Take Sample" to see the results from the random sample. Number Proportion Take Sample Prefers printed textbooks to electronic textbooks Does not prefer printed textbooks to electronic textbooks Enter the values of the sample size, the point estimate of the population proportion, and the critical value you need for your 99% confidence interval. (Choose the correct critical value from the table of critical values provided.) When you are done, select "Compute". Sample size: Point estimate: I Critical value: Compute Standard error: Margin of error: Confidence level Critical value 99% | 20.005=2.576 99% confidence interval: 95% |Z0.025=1.960 90% 20.050 = 1.645 Espaol ? Ex A t distribution with 6 degrees of freedom is graphed below. The region under the curve to the right of t = 1 is shaded. 0.4- 0.3+ 0.2+ 0.1+ t = 1 Find the area of the shaded region. Round your answer to three decimal places. 5 ? B Ex (b) Based on your sample, enter the lower and upper limits to graph the 99% confidence interval for the population proportion of all college students who prefer printed textbooks to electronic textbooks. 0.000 0.000 99% confidence interval: 1.000 1.000