Use SAS to answer all of the following Questions:

7. A drug company was concerned about the length of time a particular drug retained its potency. A random sample (Sample 1) of 10 bottles of the product was drawn from current production and analyzed for potency. A second sample (Sample 2) was obtained, stored for 1 year, and then analyzed. Assume that the distributions of the underlying population are normally distributed. The measurements obtained are given in the following table: Saple 10.6, 10.2, 10.5, 10.3, 10.8,9.8, 10.6, 10.7, 10.2, 10.0 Sample2 9.9,9.8, 9.6, 10.1, 10.2, 10.1, 9.7,9.5, 9.6. 9.8 a. Make box plots, histograms, and normal probability plots for the data from both samples. Comment on whether the data appear to be normally distributed. Also perform a normality test for the data from both samples CdMMI1Mt an iest statistic for the ( !!ality of the variaaIMx:s. b. Perform a two-sample t-test to determine whether the potency level is significantly different for the drug after being stored for a year 7. A drug company was concerned about the length of time a particular drug retained its potency. A random sample (Sample 1) of 10 bottles of the product was drawn from current production and analyzed for potency. A second sample (Sample 2) was obtained, stored for 1 year, and then analyzed. Assume that the distributions of the underlying population are normally distributed. The measurements obtained are given in the following table: Saple 10.6, 10.2, 10.5, 10.3, 10.8,9.8, 10.6, 10.7, 10.2, 10.0 Sample2 9.9,9.8, 9.6, 10.1, 10.2, 10.1, 9.7,9.5, 9.6. 9.8 a. Make box plots, histograms, and normal probability plots for the data from both samples. Comment on whether the data appear to be normally distributed. Also perform a normality test for the data from both samples CdMMI1Mt an iest statistic for the ( !!ality of the variaaIMx:s. b. Perform a two-sample t-test to determine whether the potency level is significantly different for the drug after being stored for a year