[Solved] Refer to Exercise 8.32 Find a 90% confidence interval for Why is the confidence interval you found in part (a) shorter than the one in Exercise
Question: Refer to Exercise 8.32
- Find a 90% confidence interval for
- Why is the confidence interval you found in part (a) shorter than the one in Exercise 8.32?
- Draw a graph similar to that shown in Fig. 8.4 on page 370 to display both confidence intervals.
- Comment on advisability of using the z-interval procedure here.
Deliverable: Word Document 
![[Step-by-Step] In each part, explain the effect](/images/solutions/MC-solution-library-67421.jpg "[Step-by-Step] In each part, explain the effect on the margin of")
[Step-by-Step] In each part, explain the effect on the margin of
![[See Steps] A confidence interval for a](/images/solutions/MC-solution-library-67422.jpg "[See Steps] A confidence interval for a population mean has a margin")
[See Steps] A confidence interval for a population mean has a margin
(Step-by-Step) A variable of two populations has a mean of 7.9 and
![[Steps Shown] Stichler, Richey, and Mandel compared](/images/solutions/MC-solution-library-67424.jpg "[Steps Shown] Stichler, Richey, and Mandel compared two methods of")
[Steps Shown] Stichler, Richey, and Mandel compared two methods of
Solution: Refer to Exercise 10.120. Determine a 90% confidence
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