In a random sample of 18 people, the mean commute time to work was 33.8 minutes...
In a random sample of 18 people, the mean commute time to work was 33.8 minutes and the standard deviation was 7.1 minutes. Assume the population is normally distributed and use a t-distribution to construct a 95% confidence interval for the population mean μ. What is the margin of error of μ? Interpret the results.
Homework Answers
from above margin of error =3.531
this tells us that we have 95% confidence that true population mean of commute time to work will be with in 3.53 minutes from the sample obtained.
or we have 95% confidence that true population mean of commute time to work is between 30.27 and 37.33 minutes
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In a random sample of 18 people, the mean commute time to work
was 33.8 minutes...
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In a random sample of 18 people, the mean commute time to work was 31.5 minutes and the standard deviation was 7.2 minutes. Assume the population is normally distributed and use a t-distribution to construct a 95% confidence interval for the population mean muμ. What is the margin of error of muμ? Interpret the results.
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In a random sample of 17 people, the mean commute time to work was 32.2 minutes...
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In a random sample of 18 people, the mean commute time to work was 30.7 minutes...
In a random sample of 18 people, the mean commute time to work
was 30.7 minutes and the standard deviation was 7.3 minutes. Assume
the population is normally distributed and use a t distribution to
construct a 80% confidence interval for the population mean. What
is the margin of error?
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In a random sample of 18 people, the mean commute time to work
was 30.7 minutes and the standard deviation was 7.3 minutes. Assume
the population is normally distributed and use a t distribution to
construct a 80% confidence interval for the population mean. What
is the margin of error?
In a random sample of 18 people, the mean commuite time to work to one decimal place as needed ) The margn of ee of D. It can be said...
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