A used car dealer says that the mean price of used cars sold in the last 12 months is at least       $21,000.  You suspect this claim is incorrect and find that a random sample of 14 used cars       sold in the last 12 month has a mean price of $19,189 and a standard deviation of $2,950.  Is       there enough evidence to reject the dealer’s claim at ?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
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Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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A used car dealer says that the mean price of used cars sold in the last 12 months is at least

      $21,000.  You suspect this claim is incorrect and find that a random sample of 14 used cars

      sold in the last 12 month has a mean price of $19,189 and a standard deviation of $2,950.  Is

      there enough evidence to reject the dealer’s claim at ?

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