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Mathematics, 15.04.2020 04:33 krystynas799

A survey of several 9 to 11 year olds recorded the following amounts spent on a trip to the mall: $10.31,$17.22,$26.62,$22.84 Construct the 98% confidence interval for the average amount spent by 9 to 11 year olds on a trip to the mall. Assume the population is approximately normal. Step 1 of 4 : Calculate the sample mean for the given sample data. Round your answer to two decimal places.

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A survey of several 9 to 11 year olds recorded the following amounts spent on a trip to the mall: $1...
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