Question number C) that continues..-If the confidence level decreases, then the required sample size also decreases.-If the confidence level decreases, then the required sample size does not change.D-) suppose that the confidence level remains invariant. how should we change the sample size to achieve the larger confidence interval?-Increase the sample size-Do nothing as the length of the confidence interval does not depend on the sample size-Decrease the sample size

The manager of a newly opened flower shop wants to estimate the average I expenditure of his customers using a confidence interval. He estimates that the population standard deviation is approximately $5.00. (a) Fora 99% confidence level, find the appropriate sample size necessary to achieve a margin of error of 1.50. Determine zg : Round your answer (n) UP to the next whole number. The required sample size n is (b) For a 95% confidence level, find the appropriate sample size necessary to achieve a margin of error of 1.50. ' k Determine 2% : | Round your answer (n) UP to the next whole number. The required sample size n is