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QUESTION

A local tennis probshop strings tennis rackets at the tension (pounds per square inch) requested by the customer.

A local tennis probshop strings tennis rackets at the tension (pounds per square inch) requested by the customer. Recently a customer made a claim that the probshop consistently strings rackets at lower tensions, on average, than requested. To support this claim, the customer asked the pro shop to string 13 new rackets at 65 psi. Suppose the twobtailed Pbvalue for the test described above (obtained from a computer printout) is 0.09. Give the proper conclusion for the test. Use α = 0.05.

A) There is sufficient evidence to conclude that g, the true mean tension of the rackets, is less than 65 psi.

B) Accept H0 and conclude that g, the true mean tension of the rackets, equals 65 psi.

C) There is insufficient evidence to conclude that g, the true mean tension of the rackets, is less than 65 psi.

D) Reject H0 and conclude that g, the true mean tension of the rackets, equals 65 psi.

Can some one explain for me why A is the correct answer?