Students in a different statistics class were asked to report the age of their mothers when...

Students in a different statistics class were asked to report the age of their mothers when they were born. Here are the summary statistics:

Sample size: 28 sample mean: 29.643 years sample stDev: 4.564 years

Calculate the standard error of this sample mean.
Determine and interpret a 90% confidence interval for the mother’s mean age (at student’s birth) in the population of all students at the college.
How would a 99% confidence interval compare to the 90% confidence interval in terms of its midpoint and half-width?
Would you expect 90% of the ages in the sample to be in the 90% confidence interval? Explain why or why not.

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Expert Solution

orchestra answered 1 year ago

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