8.Aspirin

a. Use the sample data from Exercise 7 and construct a 95% confidence interval estimate of s.

b. Assume that we want almost all of the tablets to contain between 315 mg and 335 mg of aspirin.
Find the range, then use the range rule of thumb to estimate the desired standard deviation.

c. Based on the results from parts

(a) and (b), what do you conclude?