Question

Which is cheaper: eating out or dining in? The mean cost of a flank steak, broccoli, and rice bought at the grocery store is $13.04. A sample of 100 neighborhood restaurants showed a mean price of $12.80 and a standard deviation of $2 for a comparable restaurant meal. only need answer for b

(b) Using the sample from the 100 restaurants, what is the p value? If required, round your answer to four decimal places.

Answer 1

Solution :

This is the two tailed test .

The null and alternative hypothesis is ,

H0 :   = 13.04

Ha : 13.04

Test statistic (t) =

= ( - ) / s / n

= (12.80 - 13.04) / 2 / 100

Test statistic = -1.2

P-value = 0.2330