Put on the Brakes The braking ability wascompared for two
Chapter 9, Problem 70(choose chapter or problem)
Put on the Brakes The braking ability wascompared for two 2012 automobile models. Randomsamples of 64 automobiles were tested for each type.The recorded measurement was the distance (in feet)required to stop when the brakes were applied at50 miles per hour. These are the computed samplemeans and variances:Model I Model IIx1 118 x2 109s 21 102 s 22 87Do the data provide sufficient evidence to indicate adifference between the mean stopping distances for thetwo models?
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