A drug manufacturer claimed that the mean potency of one of its antibiotics was 80%. A random sample of n=100 capsules were tested and produced a sample mean of X =79.7% with a statistic deviation of s=.8%. Do the data present sufficient evidence to refute the manufacturer's claim? Let =.05.

a. State the null hypothesis to be tested.

b. State the alternative hypothesis.

c. Conduct a hypothesis test using hand calculations and state your conclusions.

Confirm your results in part c) using Minitab or Excel.

how do i confirm the results using minitab or excel?