Please answer all parts. For the multiple choice just say a,b,c,d,e

You may need to use the appropriate appendix table or technology to answer this question. A sample of 121 checked bags at an airport had an average weight of 39 pounds with a standard deviation of 7 pounds. (a) At 95% condence, compute the margin of error (in pounds). (Round your answer to four decimal places.) lbs Explain what it shows. (7 Approximately 95% of all samples of size 121 will produce a sample mean and margin of error such that the distance between the sample mean and the population mean is at most the margin of error. (7 Approximately 95% of all samples of size 121 will produce a sample mean and margin of error such that the distance between the sample mean and the population mean is equal to the margin of error. 7\" Approximately 95% of all samples of size 121 will produce a sample mean and margin of error such that the distance between the sample mean and the population mean is at least the margin of error. 7\" We can say with 0.95 probability that the distance between sample mean of 39 pounds and the population mean is at least the margin of error calculated above. A; We can say with 0.95 probability that the distance between sample mean of 39 pounds and the population mean is at most the margin of error calculated above. (b) Determine a 95% condence interval for the population mean weight of checked bags at the airport (in pounds). (Round your answers to two decimal places.) lbs to lbs