(Answered) Suppose the distribution of speed at one location on a

Statistics

Suppose the distribution of speed at one location on a highway is bell shaped with a mean of 73 mph and a standard deviation of 4 mph. About 95% of vehicles at that location travel between

A) 65 and 81 mph

b) 69 and 77 mph

c) 61 and 85 mph

d) 72.6 and 73.4 mph

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