Question

1. In a study of maximal aerobic capacity, 12 women were used as subjects, and their blood plasma volumes (in liters) were measured: 3.15, 2.99, 2.77, 3.12, 2.45, 3.85, 2.99, 3.87, 4.06, 2.94, 3.53, 3.20. Assume that these are observations of a normally distributed random variable X with mean ? and variance ?².
   1. Give the values of the point estimates of ?, ?², and ?.
   2. Find a 90% and a 95% confidence intervals for ?. Interpret and compare.
   3. Find a 95% confidence interval for ?. Interpret.

Answer 1