6.69 What’s wrong?
Here are several situations in which there is an incorrect application of the ideas presented in this section. Write a short explanation of what is wrong in each situation and why it is wrong.
6.69
(a) For , we reject when is either bigger than 1.96 or smaller than . (b) You cannot just compare to ; we need to do a hypothesis test. (c) The -value is always the tail probability, so it should be . (d) is missing from the formula.