One An IQ test is designed so that the mean is 100 and the standard deviation is 23 for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be said with 99% confidence that the sample mean is within 77 IQ points of the true mean. Assume that sigma () equals=23 and determine the required sample size using technology. Then determine if this is a reasonable sample size for a real world calculation. A. The required sample size is B. Would it be reasonable to sample this number of students No. This number of IQ test scores is a fairly largenumber. Yes. This number of IQ test scores is a fairly large number.Your answer is not correct. Yes. This number of IQ test scores is a fairly small number.This is the correct answer. No. This number of IQ test scores is a fairly small number. Question 2 What is the best point estimate of the population mean net change in LDL cholesterol after the garlic treatment Construct a 99% confidence interval estimate of the mean net change in LDL cholesterol after the garlic treatment. What does the confidence interval suggest about the effectiveness of garlic in reducing LDL cholesterol What does the confidence interval suggest about the effectiveness of the treatment? A.The confidence interval limits contain 0, suggesting that the garlic treatment did affect the LDL cholesterol levels. B. The confidence interval limits do not contain do not contain 0, suggesting that the garlic treatment did not affect the LDL cholesterol levels. C. The confidence interval limits contain 0, suggesting that the garlic treatment did not affect the LDL cholesterol levels. D. The confidence interval limits do not containdo not contain 0, suggesting that the garlic treatment did affect the LDL cholesterol levels. \f