A new concrete mix is being designed to provide adequate compressive strength for concrete blocks. The specification for a particular application calls for the blocks to have a mean compressive strength greater than 1350 kPa. A sample of 100 blocks is produced and tested. Their mean compressive strength is 1356 kPa and their standard deviation is 70 kPa. A test is made of H o: 1350 versus H 1: > 1350.
(a) Find the p-value.
(b) Do you believe it is plausible that the blocks do not meet the specification, or are you convinced that the blocks meet specification? Explain your reasoning.