Question: Whats wrong? Here are several situations where there is an incorrect application of the ideas presented in this section. Write a short paragraph explaining what

What’s wrong? Here are several situations where there is an incorrect application of the ideas presented in this section.

Write a short paragraph explaining what is wrong in each situation and why it is wrong.

(a) A fleet manager for a trucking company wants to test the null hypothesis that the price of diesel fuel will not increase next month.

(b) A random sample of size 30 is taken from a population that is assumed to have a standard deviation of 18. The standard deviation of the sample mean is 18/30.

(c) Aresearcher tests the following null hypothesis: H0: x = 20.

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