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Out-of-State Tuitions The out-of-state tuitions (in
Chapter 9, Problem 18(choose chapter or problem)
Out-of-State Tuitions The out-of-state tuitions (in dollars) for random samples of both public and private four-year colleges in a New England state are listed. Find the 95% confidence interval for the difference in the means.
Questions & Answers
QUESTION:
Out-of-State Tuitions The out-of-state tuitions (in dollars) for random samples of both public and private four-year colleges in a New England state are listed. Find the 95% confidence interval for the difference in the means.
ANSWER:
Step 1 of 5
The mean is the sum of all values divided by the number of values.
is the number of values in the data set.
The variance is the sum of squared deviations from the mean divided by . The standard deviation is the square root of the variance.