Suppose a baker claims that his bread height is more than 15 cm, on average. Sev

Question

Suppose a baker claims that his bread height is more than 15 cm, on average. Several of his customers do not believe him. To persuade his customers that he is right, the baker decides to do a hypothesis test. He bakes 10 loaves of bread. The mean height of the sample loaves is 17 cm. The baker knows from baking hundreds of loaves of bread that the standard deviation for the height is 0.5 cm. Let's let Ho : 15 What will we use here? t-test z-test Suppose the test statistic comes out to 3.7712. What is your conclusion for this test? Reject the null Don't reject the null Write out, in words, your conclusion, in three different ways. Use the context of the question-the baker and his bread- and try to really state the conclusion in three different ways.

Explanation / Answer

Suppose a baker claims that his bread height is more than 15 cm, on average. Several of his customers do not believe him. To persuade his customers that he is right, the baker decides to do a hypothesis test. He bakes 10 loaves of bread. The mean height of the sample loaves is 17 cm. The baker knows from baking hundreds of loaves of bread that the standard deviation for the height is 0.5 cm. Let's let Ho : 15 What will we use here? t-test z-test Suppose the test statistic comes out to 3.7712. What is your conclusion for this test? Reject the null Don't reject the null Write out, in words, your conclusion, in three different ways. Use the context of the question-the baker and his bread- and try to really state the conclusion in three different ways.

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