Suppose m1 and m2 are true mean stopping distances at50 mph for cars of a certain type
Chapter 9, Problem 19(choose chapter or problem)
Suppose m1 and m2 are true mean stopping distances at50 mph for cars of a certain type equipped with two different types of braking systems. Use the two-samplettest at significance level .01 to test H0: m1 2 m2 5 210versus Ha: m1 2 m2 , 210 for the following data:m 5 6, x 5 115.7, s1 5 5.03, n 5 6, y 5 129.3, ands2 5 5.38.
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