A survey of several 10 to 11 year olds recorded the following amounts spent on a trip to the mall: $17.33,$19.83,$21.10,$24.20,$13.72,$17.82  Construct the 95% confidence interval for the average amount spent by 10 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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A: Given Data

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Q: 1

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.