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7) An economic surveys 38 adults living is Townsburg about their salaries. The mean annual salaries...

7)

An economic surveys 38 adults living is Townsburg about their salaries. The mean annual salaries for those surveyed was found to be x̄ = $30,998, with a standard deviation of $2,286.

a) Find a 90% confidence interval for the true mean annual salary of adults living in Townsburg.

b) Provide the right endpoint of the interval as your answer.

Round your answer to the nearest dollar.

Math   Statistics-And-Probability   
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