Starting salaries of 110 college graduates who have taken a statistics course have a mean of...

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Statistics

Starting salaries of 110 college graduates who have taken astatistics course have a mean of $42,647. Suppose the distributionof this population is approximately normal and has a standarddeviation of $10,972.
Using a 75% confidence level, find both of the following:
(NOTE: Do not use commas or dollar signs in your answers.)

(a) The margin of error:  

(b) The confidence interval for the meanμ:  

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SolutionGiventhat 42647 10972n 110At    See Answer
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