A sample of 27 blue jellybeans with a mean weight of 08540 g

A sample of 27 blue jellybeans with a mean weight of 0.8540 g was taken. Assume that a is know to be 0.0565g. a test that uses a 0.05 signification level to test the claim that the mean weight of all jellybeans is equal to 0.8535g Assume the weight of jellybeans is normally distributed What is the test statistic? What is the P-value? What is the conclusion? Is the conclasion valid today? why why not?

Solution

(a) z=0.05

(b) Option B is correct.There is no sufficient evidence .