Find out the test statistic


Highway transportation officials are trying to find out if the average speed on Archer road is above 45mph, the post speed limit. They took a sample of 50 cars. The sample mean was 44.9 and standard deviation was 10. Find out the test statistic.

A. -0.01

B. 0.01

C. -0.0707

D. 0.0707

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Basic Statistics: Find out the test statistic
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