Discrete Random Variables – Mean Answers

Based on the model (curve) provided we can estimate that the mean is μ = ºF, that the curve changes concavity around a value of ºF, which is ºF below the mean, so the standard deviation of this distribution is approximately σ = ºF.

Based on the model (curve) provided we can estimate that the mean is μ = ºF, that the curve changes concavity around a value of ºF, which is ºF below the mean, so the standard deviation of this distribution is approximately σ = ºF.

Based on the model (curve) provided we can estimate that the mean is μ = ºF, that the curve changes concavity around a value of ºF, which is ºF below the mean, so the standard deviation of this distribution is approximately σ = ºF.

Which point on the Normal curve represents the location where concavity changes?

Based on the model (curve) provided we can estimate that the mean is μ = ºF, that the curve changes concavity around a value of ºF, which is ºF below the mean, so the standard deviation of this distribution is approximately σ = ºF.

What percent of observations are expected to fall between 2 and 3 standard deviations above (or below) the mean?

What percent of oil changes take less than 60 minutes?

In which percentile is a dog who weighs 25 pounds?

About what percent of the rainfall amounts do you expect to be within 7 inches of the mean?

About what percentage of the rainfall do you expect to be more than 23.5 inches?