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In a random sample of 2525 people, the mean commute time to work was 31.6 minutes and the standard deviation was 7.2 minutes. Assume the
In a random sample of
2525
people, the mean commute time to work was
31.6
minutes and the standard deviation was
7.2
minutes. Assume the population is normally distributed and use a t-distribution to construct a
80%
confidence interval for the population mean
mu.
What is the margin of error of
mu?
Interpret the results.
The confidence interval for the population mean
mu
is left parenthesis nothing comma nothing right parenthesis
(Round to one decimal place as needed.)
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