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Heybonita Heybonita
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A year ago
In 1993, Toyota introduced the Supra sports car, which was designed to have 320 horsepower in stock configuration. A computer chip modification for the fuel injection system was later introduced that was claimed to increase horsepower. To check whether the chip actually does increase horsepower, we sample six stock 1993 Supras and record each vehicle’s horsepower (the results appear below).

Car number123456
Stock hp315321325318320321

Next, technicians install the computer chip in each of the six vehicles’ electronic injection systems and then record the horsepower of each (the results appear below).

Car number123456
Modified hp320320328325323323

Does it appear that there is an average horsepower increaseassociated with the chip modification? Select the appropriate critical value (CV), test statistic (TS), and decision. (Useα= 0.05).



CV = –2.0150; TS = –2.86; rejectH0



CV = 2.0150; TS = –2.86; fail to rejectH0



CV = –1.8125; TS = –1.72; fail to rejectH0



CV = –2.1318; TS = 2.29; rejectH0

Textbook 
Introductory Statistics: A Problem-Solving Approach

Introductory Statistics: A Problem-Solving Approach


Edition: 3rd
Author:
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Akabbett1Akabbett1
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A year ago
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Heybonita Author
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A year ago
Thanks for your help!!
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Yesterday
Helped a lot
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2 hours ago
this is exactly what I needed
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