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In: Statistics and Probability

A car company wishes to test the claim that at an average of 55 mph, the...

A car company wishes to test the claim that at an average of 55 mph, the stopping distance for auto brakes is 130 ft. In a random sample of 12 individuals that were tested for their breaking distance were recorded, a sample mean of 114 ft. and with a standard deviation is recorded as 20 ft. At the 5% level of significance, test the claim that the stopping distance for a car traveling at 55 mph is different than the stated 130 ft. What is the Null hypothesis (H0); Alternate hypothesis (H1); and the direction of the test? mu=130; mu>130; left tail Test Which distribution is used in this case? t with 11 d.f What is the critical value? [ Select ] What is the Test Statistic Value? [ Select ] What is the P-value? [ Select ] What is the conclusion of the test?

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