A pharmaceutical corporation is interested in studying the shelf life of a drug. A random sample of tablets of this drug is stored for different numbers of months and the potency of the drug is measured in milligrams:
a. Draw a scatter diagram.
b. Calculate the set of elementary estimates of (3. Find the median slope estimate.
c. Calculate the set of elementary estimates of Q. Find the median intercept estimate. Write the equation of the regression line.
d. Calculate the estimated potency for a tablet that has been stored for 10 months.
e. Do the data support the claim that an increase in storage time results in a decrease in potency? State Ho and Ha and test. Find the P-value.