Test the claim about the population mean, µ, at the given level of significance using the given sample statistics. Claim: u = 30; a = 0.04; o = 3.58. Sample statistics: x = 28.7, n = 71 Identify the null and alternative hypotheses. Choose the correct answer below. O A. Ho: H< 30 Hai H = 30 B. Ho: H 30 Ha:u = 30 OC. Ho:H = 30 HaiH 30 O D. Ho: H = 30 Ha: u< 30 ΟΕ. H :μ = 30 H3: u > 30 OF. Ho: H> 30 Haiu = 30 Calculate the standardized test statistic. The standardized test statistic is (Round to two decimal places as needed.) Determine the critical value(s). Select the correct choice below and fill in the answer box to complete your choice. (Round to two decimal places as needed.) O A. The critical values are t B. The critical value is Determine the outcome and conclusion of the test. Choose the correct answer below. O A. Fail to reject Ho. At the 4% significance level, there is not enough evidence to support the claim. O B. Reject Ho. At the 4% significance level, there is enough evidence to support the claim. OC. Reject Ho. At the 4% significance level, there is enough evidence to reject the claim. O D. Fail to reject Ho. At the 4% significance level, there is not enough evidence to reject the claim.

The population mean mu is a measure of A. Central tendency of a sample B. Central tendency of a populationC. Dispersion of a population D. The uncertainty of a population E. None of the above

Determine the point of estimate of the population mean and margin of error from the given information:        Lower Bound: 5        Upper Bound: 23   Question 4 options:   x¯= 15   E = 10   x¯= 12   E = 9   x¯= 13.5   E = 9   x¯= 14   E = 9

Given Samples A and B below Sample A: 2.0 Sample B: 4.3 2.8 4.5 O a. Calculate the mean and standard deviation for each sample. Sample A: XA = Sample B: XB = ; SB = Round to two decimal places if necessary b. Calculate the coefficient of variation for each sample. Sample A: CVA = ; SA = _% 4.2 4.2 4.3 4.0 Sample B: CVB Round to two decimal places if necessary c. Which sample is more variable? o Sample A Sample B Neither sample is more variable than the other 4.4 4.3 3.7 4.9 _% 3.6 2.6 2.8 2.2 2.3 4.1

Determine Px and ox from the given parameters of the population and sample size. μ = 62, o = 24, n = 35 = ...