Question 923592: how long does it take to commute from work to home. it depends on several factors, including route, traffic, and departure. the data below are results (in minutes) from a random sample of eight trips. use the data to create a 95% confidence interval for the population mean time of the commute. 27, 38, 30, 42, 24, 37, 30, 39
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! how long does it take to commute from work to home. it depends on several factors, including route, traffic, and departure. the data below are results (in minutes) from a random sample of eight trips. use the data to create a 95% confidence interval for the population mean time of the commute.
27, 38, 30, 42, 24, 37, 30, 39
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I used my TI-84 to get the following::
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x-bar = 33.38
sample standard deviation:: s/sqrt(8) = 6.46
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95% CI:: 33.38 - 1.96*6.46 < u < 33.38+1.96*6.46
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Cheers,
Stan H.
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