Refer to Exercise 8.31. a. Find a 99% confidence interval for . b. Why is the confidence
Question:
a. Find a 99% confidence interval for μ.
b. Why is the confidence interval you found in part (a) longer than the one in Exercise 8.31?
c. Draw a graph similar to that shown in Fig. 8.5 on page 315 to display both confidence intervals.
d. Which confidence interval yields a more precise estimate of μ? Explain your answer.
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n 18 x 63 204 a Step 1 001 z 2 z 0005 2575 Step 2 b The confidenc...View the full answer
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