Answer: Using Correct Distribution. In Exercises 58, assume that we want to construct a
Chapter 7, Problem 6(choose chapter or problem)
Using Correct Distribution. In Exercises 58, assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) Find the critical value t / 2 , (b) find the critical value z / 2 , (c) state that neither the normal distribution nor the t distribution applies Confidence level is 90%, is not known, and the dotplot of IQ scores of 20 randomly selected statistics instructors is as shown below.
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