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Salaries of 48 college graduates who took a statistics course in college have a​ mean, x...

Salaries of 48 college graduates who took a statistics course in college have a​ mean, x of $ 60,700. Assuming a standard​ deviation, sigma​, of ​$10,499​, construct a 90​% confidence interval for estimating the population mean mu. Click here to view a t distribution table. LOADING... Click here to view page 1 of the standard normal distribution table. LOADING... Click here to view page 2 of the standard normal distribution table. LOADING... ​$ nothingless thanmuless than​$ nothing ​(Round to the nearest integer as​ needed.)

Math   Statistics-And-Probability   
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Answer #1

90% confidence interval for is

- Z * / sqrt(n) < < + Z * / sqrt(n)

60700 - 1.645 * 10499 / sqrt(48) < < 60700 + 1.645 * 10499 / sqrt(48)

58207 < < 63193

90% CI is ( 58207 , 63193)

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