Question 874760
H0: mean = 1500 Claim
H1: mean > 1500 
 Sample mean 1509.5 
 Std error of mean 4.854
t-test Using 95% CI, (right handed only: .05) 
 t = 9.5/(4.854/sqrt(25)) = 9.5/.9708
P(t > 9.78574)= ~ 0,  basically 'off the charts'
reject H0