Report for each requested hypothesis test: the null and alternative hypothesis; the test statistic and p-value; whether you reject or fail to reject the null; and a concise statement of your conclusion.Use a 5% test size.Do not paste your Excel/PhStat output.

1.A plastic manufacturer wants to evaluate the durability of rectangular molded plastic blocks that are to be used in furniture.Data listing the hardness (in Brinell units) of 50 plastic blocks are provided in the data file PLASTIC.xls.Test the hypothesis that the population mean hardness is equal to 275 Brinell units.