A simple random sample with n=24 provided a sample mean of 40.2 and a sample standard de ihationt d 13 s. Which of the following statements is correct?
i. The 90% interval is 40.2±2.064×13.5/√24 =40.2±5.69. Or (34.51.45.89),
ii. The 90% interval is 40.2±1.714×√13.5/241=40.2±1.29. Or (38.91,41.49).
iii. The 95% interval is 40.2±1.711×13.5/√24=40.2±4.71. Or (35.49,44.91).
iv. The 95% interval is 40.2±2.069×13.5/√24=40.2±8.78. Or (34.5.45.9).