(See Steps) How do you determine whether to use the z or t distribution in computing the margin of error,
Question: How do you determine whether to use the z or t distribution in computing the margin of error, E
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![[Steps Shown] Use a significance level of](/images/solutions/MC-solution-library-41909.jpg "[Steps Shown] Use a significance level of 0.05 to test the claim")
[Steps Shown] Use a significance level of 0.05 to test the claim
![[Solution] Use the given degree of confidence](/images/solutions/MC-solution-library-41910.jpg "[Solution] Use the given degree of confidence and sample data")
[Solution] Use the given degree of confidence and sample data
(All Steps) n = 30, X̄ =85.4, s =11.5, 90 percent 79.61< X̄ <91.19
![[All Steps] In a sample of 47](/images/solutions/MC-solution-library-41912.jpg "[All Steps] In a sample of 47 adults selected randomly from one town,")
[All Steps] In a sample of 47 adults selected randomly from one town,
![[All Steps] Find the minimum sample size](/images/solutions/MC-solution-library-41913.jpg "[All Steps] Find the minimum sample size you should use to assure")
[All Steps] Find the minimum sample size you should use to assure
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