1. You are interest in studying the mean BMI (Body Mass Index) for college students. The population standard deviation of BMI is unknown. You select a sample of size 28 and compute the sample mean to...

1. You are interest in studying the mean BMI (Body Mass Index) for college
students. The population standard deviation of BMI is unknown. You
select a sample of size 28 and compute the sample mean to be 21.8 with a
sample standard deviation of 2.6

a. For a 99% level of confidence what is the appropriate critical value
t*that needs to be used to calculate the margin of error? Determine
the value of the critical value using a table or preferred technological
tool. Show the degrees of freedom to receive full credit.

b.  What is the margin of error for a 99% confidence interval for the
mean BMI?