Salaries of 11 college graduates who took a statistics course in college have a mean of $80,548 and a standard deviation of $1,518. Construct a 95% confidence interval for estimating the population standard deviation. Enter the upper bound of the confidence interval. (Round your answer to nearest whole dollar.)
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1.John wishes to estimate the population standard deviation of salary of college graduates who took a statistics course in college. How many college graduates must he survey? Assume that he wants to be the sample standard deviation to be within 50% of the population standard deviation and to be 99% confident of that statement.
2.Salaries of 11 college graduates who took a statistics course in college have a mean of $80,548 and a standard deviation of $1,518. Construct a 95% confidence
Enter the upper bound of the confidence interval. (Round your answer to nearest whole dollar.)
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