Mathematics, 30.03.2020 16:58 whocaresfasdlaf9341
Construct the 80% confidence interval for the average amount spent by 11 to 12 year olds on a trip to the mall. Assume the population is approximately normal. Step 3 of 4: Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.
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Construct the 80% confidence interval for the average amount spent by 11 to 12 year olds on a trip t...
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