For Exercises perform these steps.

a. State the hypotheses and identify the claim.
b. Find the critical value(s).
c. Compute the test value.
d. Make the decision.
e. Summarize the results.
Use the traditional method of hypothesis testing unless otherwise specified.

How big is a teaspoon? Many cookie recipes call for a teaspoon of dough to be dropped for each cookie. Eight randomly selected volunteer bakers baked a standard chocolate chip cookie recipe, making the cookies their usual “teaspoon” size. The number of cookies was recorded for each baker. Each volunteer was then given a new device that automatically dispenses a teaspoon of dough and then was asked to bake another batch of cookies, counting the results. At α = 0.10, is there a difference in the number of cookies per baker?

Transcribed Image Text:

Baker First batch Second batch 12 2 3 3 4 5 6 7 36 35 40 38 36 39 36 38 39 39 40 39 42 35 8 39 36