I need solve this assignment of MTH-213

QUESTION 26 5 points Save Answer A group of 25 randomly selected students, from all MTH213 sections QUESTION 29 4 points Save Answer at Zayed University, has a sample mean score of 79 with a sample A Hi-Tech company has introduced a standard deviation of 5 on a Midterm Exam. Assume that the scores are new flash disk. Some dealers and normally distributed. customers have complained that (a) Construct a 90% confidence some of the new disks are defective. interval for the mean score, u, of all In order to investigate this the students taking the test? Round your answer to three decimal places. company randomly tested n disks (b) Based on the 90% confidence and found that 7.47% were defective. interval in (a), is it reasonable that the Find the appropriate sample size population mean score is 75? Justify necessary to achieve a margin of your answer. error of 0.057 in order to construct a QUESTION 28 3 points Save Answer 97% confidence interval for the Which of the following is an incorrect proportion of all flash disks that are statement? defective. Round your answer to the O The larger the value of the sample nearest integer (whole number). size, the closer the standard deviation of the sampling distribution of the sample mean is to the standard deviation of the population. QUESTION 30 3 points Save Answer The sampling distribution of the sample mean is exactly normal if The price of iPhone 13 pro max is the population has a normal recorded at a random sample of 40 distribution. When the sample size is large, the electronics stores in UAE. The sampling distribution of the resulting 90% confidence interval for sample mean is approximately the mean price of iPhone 13 pro max normal even if the population is not normally distributed. was (3034 Dhs, 3731 Dhs). Find the The sampling distribution of the margin of error (E) of the 90% sample mean has mean equal to confidence interval. Round your the population mean even if the answer to one decimal place. population is not normally distributed