(Answered) Te average cost of xyz brand running shoes is 85 per pair

Statistics

The average cost of XYZ brand running shoes is $85 per pair (, with a standard deviation of $8 (σ = 8). If nine pairs of running shoes are selected (n = 9), find the probability that the mean cost of a pair of shoes will be less than $80: P(.Assume that the variable is normally distributed.

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