The National Center for Health Statistics reports that the average systolic blood pressure for males 35-44 years of age has a mean of 122.The medical director of a large company believes the average systolic blood pressure for male executives 35-44 years of age at his company is different from 122.He looks at the medical records of 64 randomly selected male executives in this age group and find that the mean systolic blood pressure in this sample is 125.5 and the standard deviation is 24.The sample does not contain any outliers.Suppose you want to use this sample to create a confidence interval for,the true average systolic blood pressure of all 35-44 year old male executives at this company.Are all assumptions met to construct this confidence interval?

a.Yes, both assumptions are met.

b.It is impossible to determine.

c.No, neither of the assumptions are met.

d.No, only one assumption is met.

e.We know one assumption is met.We are unsure about the second assumption, but since the method is robust, it is okay.The confidence interval is still valid.