Question

In cell C20, determine the lower value for the interval of miles traveled on a full tank of gas around the mean that includes approximately 68% of miles for this car.

Answer 1

µ = 420.5 miles

σ = 50 miles

Since the distribution is normally distributed, the values within the one standard deviation will contain 68% of miles for this car.

Lower value = µ - 1*σ

Lower value = 420.5 - 1*50

Lower value = 370.5

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