SOLUTION: The 90% confidence interval for the mean one-way commuting time in New York City is (37.8 minutes, 38.8 minutes). Determine the margin of error.
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Question 627160: The 90% confidence interval for the mean one-way commuting time in New York City is (37.8 minutes, 38.8 minutes). Determine the margin of error.
Answer by reviewermath(1029) (Show Source): You can put this solution on YOUR website!
get the average of the lower and upper end to get the sample mean.
sample mean = = 38.3
margin of error = sample mean - lower end = 38.3 - 37.8 = 0.5 or
margin of error = upper end - sample mean = 38.8 - 38.3 = 0.5
Answer: 0.5
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