You intend to estimate a population mean with a confidence interval. You believe

Question

You intend to estimate a population mean with a confidence interval. You believe the population to have a normal distribution. Your sample size is 101. Find the critical value that corresponds to a confidence level of 90%. (Report answer accurate to three decimal places with appropriate rounding.)

ta/2 = ± ( )

You intend to estimate a population mean with a confidence interval. You believe the population to have a normal distribution. Your sample size is 101. Find the critical value that corresponds to a confidence level of 90%. (Report answer accurate to three decimal places with appropriate rounding.)

Explanation / Answer

We are being asked a two tail critical value

Degree of freedom = 101 - 1 = 100

t critical = 1.660

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