b) Plot the points and graph the line as a check on your calculations.
c) Calculate S^2
d) Find a 95% confidence interval for the mean potency of a 1-ounce portion of antibiotic
stored at 65°F.
e) Find a 95% prediction interval for the potency of a 1-ounce portion of antibiotic stored at
65°F. Compare this interval to that calculated in Part d)
Please answer all parts and show steps. Thank you.