QuickHelper

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    Phoniex
    Jul-2007 - Jun-2012

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    ChevronTexaco Corporation
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Category > Engineering Posted 15 Sep 2017 My Price 15.00

A company wanted to know if a special gas additive truly (and significantly) aff

A company wanted to know if a special gas additive truly (and significantly) affected the gas mileage in their company vehicles. Use the data below to determine whether or not the additive significantly affected gas mileage. 

Data:

Vehicle   mpg pre   mpg post
1             15           18
2             13            19
3              17            17
4              21            24
5             14           18
6             16           21
7             18           19
8             17           20

Choice:

 

A Yes, because the T-statistic of 3.125 exceeded the T-critical value of 2.365
  B Yes, because the T-statistic of 4.51 exceeded the T-critical value of 2.365
  C No, because the T-statistic of 0.563 failed to exceed the T-critical value of 2.365
  D Yes, because the T-critical value is 1.895

Answers

QuickHelper
(10)
Status NEW Posted 15 Sep 2017 05:09 PM My Price 15.00

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