I know I'm supposed to ask only one question but I desperately need help with this multipart question (a), (b) & (c). I can't post the other parts to answer without all of them. OR maybe answer at least part (a) please.
In anticipation of an upcoming election, ofcials in Rising Falls County are looking at the distance from each voter's home to that voter's nearest polling station. Assume that the population of all such distances for voters in Rising Falls County is approximately normally distributed. An article for the newspaper Front/ine Freedom claimed that the mean of this population is 4.97 km. You want to test this claim, so you select a random sample of 19 Rising Falls County voters, and for each you record the distance the voter lives from their nearest polling station. Follow the steps below to construct a 99% confidence interval for the population mean of all the distances voters in Rising Falls County live from their nearest polling station. Then state whether the condence interval you construct contradicts the reporter's claim. (If necessary, consult a list of formulas.) (a) Click on "Take Sample" to see the results for your random sample. Take Sample Sample standard deviation Number of people Sample mean 19 4.741 2.252 Enter the values of the sample size, the point estimate of the mean, the sample standard deviation, 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: x 53 Q 19 Standard error: Point estimate: 0.517 4.741 Sample standard deviation: M . f : _ argln 0 error toms2,878 2.252 1.488 t0.010 = 2.552 Critical value: 2.878 t0.025 = 2.101 99% confidence interval: 4.741i1.488 t0'050= 1.734 tom: 1.330 (b) Based on your sample, graph the 99% confidence interval for the population mean of all the distances the voters in Rising Falls County live from their nearest polling station. . Enter the values for the lower and upper limits on the graph to show your confidence interval. . For the point (), enter the claim 4.97 from the article. 99% confidence interval: 0.000 10.000 5.000 0 2 4 6 8 10 X 5 ?(c) Does the 99% condence interval you constructed contradict the claim made in the article? Choose the best answer from the choices below. ' No, the condence interval does not contradict the claim. The mean of 4.97 km from the article is inside the 99% confidence interval. No, the condence interval does not contradict the claim. The mean of 4.97 km from the article is outside the 99% confidence interval. ' Yes, the confidence interval contradicts the claim. The mean of 4.97 km from the article is inside the 99% confidence interval. Yes, the confidence interval contradicts the claim. The mean of 4.97 km from the article is outside the 99% confidence interval