4. A local tennis pro-shop strings tennis rackets at the tension (pounds per square inch) requested by the customer. Recently a customer made a claim that the pro-shop consistently strings rackets at...

Extracted text: A local tennis pro-shop strings tennis rackets at the tension (pounds per square inch) requested by the customer. Recently a customer made a claim that the pro-shop consistently strings rackets at lower tensions, on average, than requested. To support this claim, the customer asked the pro shop to string 6 new rackets at 68 psi. Suppose the two-tailed P-value for the test described above (obtained from a computer printout) is 0.07. Find the conclusion for the test at the 5% significance level. There is sufficient evidence to conclude that u, the true mean tension of the rackets, is less than 68 psi. O a. There is insufficient evidence to conclude that u, the true mean tension of the rackets, is less than 68 psi. Ob. Accept H o and conclude that p, the true mean tension of the rackets, equals 68 psi. C. Reject H o and conclude that u, the true mean tension of the rackets, equals 68 psi.