Changing the confidence level. Consider the setting of the
Chapter , Problem 6.14(choose chapter or problem)
Changing the confidence level. Consider the setting of the previous two exercises. Suppose that the sample mean is still 73, the sample size is 49, and the population standard deviation is 28. Make a diagram similar to Figure 6.6 (page 363) that illustrates the effect of the confidence level on the width of the interval. Use 80%, 90%, 95%, and 99%. Summarize what the diagram shows.
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