When 10 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 0.74 years. Assume that times are normally distributed.
-The appropriate test statistic to test the hypotheses is _____.
A)-13.10
B)-2.53
C)-2.09
D)2.09
E)2.53

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The Answer of When 10 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 0.74 years. Assume that times are normally distributed.
-The appropriate test statistic to test the hypotheses is _____.
A)-13.10
B)-2.53
C)-2.09
D)2.09
E)2.53

When 10 Randomly Selected Car Owners Are Surveyed, It Is