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A survey of several 11 to 13 year olds recorded the following amounts spent on a...

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Statistics

A survey of several 11 to 13 year olds recorded the followingamounts spent on a trip to the mall:

$28.43,$25.23,$23.98,$24.79,$29.05

Construct the 95% confidence interval for the average amountspent by 11 to 13 year olds on a trip to the mall. Assume thepopulation is approximately normal.

Step 3 of 4 : Find the critical value that should be used inconstructing the confidence interval. Round your answer to threedecimal places.

Answer & Explanation Solved by verified expert
3.7 Ratings (355 Votes)
SolutionGiven thatxdx x Adx22843243590492523077059292398202404804247912114641290530593025x 13148dx 148dx2 213448The sample    See Answer
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