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Starting salaries of 80 college graduates who have taken a statistics course have a mean of $43,134 and a standard deviation of $9,510. Using a

Starting salaries of 80 college graduates who have taken a statistics course have a mean of $43,134 and a standard deviation of $9,510. Using a 75% confidence level, find both of the following: (NOTE: Do not use commas nor dollar signs in your answers. Use two digits after the decimal point for critical values.)

(a) The margin of error:

(b) The confidence interval for the mean: <<

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