Mathematics, 31.03.2020 00:15 Kaylenejohnson00
Records of 40 used passenger cars and 40 used pickup trucks (none used commercially) were randomly selected to investigate whether there was any difference in the mean time in years that they were kept by the original owner before being sold. For cars, the mean was 5.3 years with standard deviation 2.2 years. For pickup trucks, the mean was 7.1 years with standard deviation 3.0 years.
Answers: 1
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Records of 40 used passenger cars and 40 used pickup trucks (none used commercially) were randomly s...
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