Question

Suppose μ1 and μ2 are two mean stopping distance of km/hr for 50km/hr for cars of...

Suppose μ1 and μ2 are two mean stopping distance of km/hr for 50km/hr for cars of a certain type equipped with two different types of braking systems. Use the two sample t test at significance level of 0.01 to test. H0: μ1 - μ2 = 0 Verses. H1: μ1 - μ2 < 0 for the following statistics.
n1 = 6 x ̅1 = 116 S1 = 5.0
n2. = 6 x ̅2 = 129 S2 = 5.5   

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