A wine manufacturer sells cabernet with a label that asserts an alcohol content of 11%. Sixteen bottles of this label are randomly selected and analyzed for alcohol content. The resulting observations are:
10.8 9.6 9.5 11.4 9.8 9.1 10.4 10.7
10.2 9.8 10.4 11.1 10.5 10.8 9.5 9.8
Looking at the data, you suspect that the manufacturer is incorrect in its label claim. You want to perform hypothesis testing to prove or disprove it.
a) Do you think that it is possible to perform hypothesis test on this case? Explain.
b) Do you think that the manufacturer is correct in its label claim? Explain.