The manufacturer of a certain foreign car
Tsuko Johnson
Answered question
2022-05-10
The manufacturer of a certain foreign car sold in the United States claims that it will average 35 miles per gallon of gasoline with the standard deviation of 9.3 miles. To test this claim, a consumer's group randomly selects 40 of these cars and drives them under normal driving conditions. These cars average 28 miles to the gallon. Does this sample indicate that average mileage is more than 35?
Answer & Explanation
nick1337
Expert2022-08-10Added 777 answers
Given that:
To test the hypothesis,
Test statises,
P.value
Close to 0
Test is significent
TRUE
To test the hypothesis
p-value is less than 0.0001
Test is significant
True!
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