Confirm 12 Please confirm answers below are correct Accordi

Confirm 12 // Please confirm answers below are correct?

According to a recent National Health Statistics Report, the weights of male babies less than two months old in the United States are normally distributed with a mean 11.5 pounds and a standard deviation 2.7 pounds. A sample of 49 male babies, who were less than two months old, was randomly selected and found to have a sample mean weight of 12.1 pounds and standard deviation of 2.3 pounds. Answer the following questions based on this scenario. Question Symbol Numeric Value a) (1 pt) What is the population mean? b) (1 Pt) What is the population standard deviation? c) (1 Pt) What is the sample mean? d) (1 Pt) What is the sample standard deviation? e) (1 pt) What is the sample size? f) (2 pts) When samples of 49 male baby weights are selected from this population, what is the mean of the sampling distribution of sample means? g) (2 pts) When samples of 49 male baby weights are selected from this population, what is the standard deviation of the sampling distribution of sample means? Explain whether the sampling distribution is normal.

Solution

f. mu = 11.5

h. Not true. It\'s already normally distributed. It\'s all you need to know. Sample size does not matter.

The rest is fine.