Question 61325
In previous test, baseballs were dropped 24ft. onto a concrete surface, and they bounced an average of 92.84 in. In a test of a sample of 40 new balls, the bounce heights had a mean of 92.67 in. and a standard deviation of 1.79  in(based on data from Brookhaven National Laboratory). Use a 0.05 significance level to determine whether there is sufficient evidence to support the claim that the new balls have bounce heights with a mean different from 92.84 in. Does it appear that the new baseball are different?

My solution:
t = 92.67-92.84/1.79/sq.root of 40 = -0.17/.2830238 = -0.6006

I think claim is p not equal to 92.84, so null hyphotesis is p = 92.84
alternative hyphotesis p not equal to 92.84

This is a two-tailed test and Critical value is +- 1.96
Comment:
Where do I base my answer ?
Your t-value of -0.6006 is not in the critical region below
z=-1.96 so you "Fail to reject Ho" which was mu=92.84 
Do I need P value for this problem?
Not really.  But the p-value is 0.55 which is greater 
than alpha= 0.05 and supports the conclusion of "Fail to reject Ho".
Cheers,
Stan H.
Thank you for all your help.
Jo