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So clothes are random variable is a breaking distance of a certain car and feet on a dry surface when going 55 mph. The mean

So clothes are random variable is a breaking distance of a certain car and feet on a dry surface when going 55 mph. The mean breaking distance is 148 ft and the standard deviation is 1.64 ft. We randomly sample 31 breaking distances from this population what is the probability that the mean breaking distance for the sample is between 147.6 ft and 148.6 ft?

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