Question

A store manager claims that the average number of pages a person copies on the store’s copy machine is greater than 31. A sample of 50 customers’ orders is selected. At the  = 0.10 level, is there enough evidence to support the claim? Use the Pvalue. Assume s = 30.9 and x = 32.4

State:__________________________________ p-value:_________________________ Decide:________________________________ Summary: (remember to circle the correct description before completing the statement) There is/is not enough evidence to reject/support the claim that______________________ ________________________________________________________________________ _______________________________________________________________________

Answer 1

Solution :

= 31

=32.4

S =30.9

n = 50

This is the right tailed test .

The null and alternative hypothesis is ,

H0 :    = 31

Ha : > 31

Test statistic = t

= ( - ) / S / n

= (32.4 -31) / 30.9 / 25

= 0.226

Test statistic = t = 0.226

P-value =0.4113

= 0.10  

P-value >

0.4113 >0.10

Do not reject the null hypothesis .

There is not sufficient evidence to suggest that