Mathematics, 18.05.2021 06:50, leneenmarshall3125

John Beale of Stanford, CA, recorded the speeds of cars driving past his house, where the speed limit read 20 mph. The mean of 100 readings was 23.84 mph. with a standard deviation of 3.56 mph. (He actually recorded every car
for a two-
month period. These are 100 representative readings.)
If the distribution follows a Normal model where speeding over 20.28 miles per hour?

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John Beale of Stanford, CA, recorded the speeds of cars driving past his house, where the speed limi...