Multiple Choice
When 100 randomly selected car owners are surveyed,it is found that the mean length of time they plan to keep their car is 7.01 years,and the standard deviation is 3.74 years.Calculate the appropriate test statistic to test the claim that the mean for all car owners is less than 7.5 years.
A) -13.10
B) -2.53
C) -1.31
D) 1.31
E) 2.53
Correct Answer:
Verified
Correct Answer:
Verified
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