HW 7: Problem 7 Previous Problem Problem List Next Problem (1 point) Use the given data to find the 95% confidence interval estimate of the population mean M. Assume that the population has a normal distribution. IQ scores of professional athletes: Sample size n = 26 Mean x = 103 Standard deviation s = 12 Note: Round your answer to 2 decimal places.HW 7: Problem 11 Previous Problem Problem List Next Problem (1 point) 55 people are randomly selected and the accuracy of their wristwatches is checked, with positive errors representing watches that are ahead of the correct time and negative errors representing watches that are behind the correct time. The 55 values have a mean of 102sec and a standard deviation of 157 sec. Use a 0.02 significance level to test the claim that the population of all watches has a mean of Osec. The test statistic is The P-Value is The final conclustion is A. There is not sufficient evidence to warrant rejection of the claim that the mean is equal to 0 B. There is sufficient evidence to warrant rejection of the claim that the mean is equal to 0