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Commuting Times in New York The 90% confidence interval
Chapter 7, Problem 26(choose chapter or problem)
Commuting Times in New York The 90% confidence interval for the mean one-way commuting time in New York City is minutes. Construct a 95% confidence interval based on the same data. Which interval provides more information? Source: www.census.gov 37.71 _ m _ 38.89; the 90% interval
Questions & Answers
QUESTION:
Commuting Times in New York The 90% confidence interval for the mean one-way commuting time in New York City is minutes. Construct a 95% confidence interval based on the same data. Which interval provides more information? Source: www.census.gov 37.71 _ m _ 38.89; the 90% interval
ANSWER:Step 1 of 4
Given:
confidence interval:
The sample mean lies exactly in the middle between the boundaries of the confidence interval and thus is the average of the boundaries: