donovanfiler1008 donovanfiler1008
  • 24-11-2022
  • Mathematics
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construct the 80% confidence interval for the average amount spent by 8 to 11 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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