Standard Deviation = 5.38: Calculate the variance

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Use sample standard deviation formula to find the standard deviation of these BMI’s: ​ 33.3, 28, 45.4, 28.4 and 25.9.

On average, ages of people in a sample deviate from the mean by 3.23 years. Find the variance. Do not round your answe Submit Question Online ver Proctor om MacBook Pro G Search or type URL 6

College students average 8.2 hours of sleep per night with a standard deviation of 45 minutes. If the amount of sleep is normally distributed, what proportion of college students sleep for more than 9 hours? Probability = %3D

The distance of a single score from the mean - for example, the distance of your exam score from the average exam score for the entire class - is referred to as what? O Deviation O Variance Sum of Squared deviations (S.S.) Standard deviation

Suppose the length of human pregnancies from conception to birth varies according to a distribution that is normal with mean of 266 days and standard deviation of “alpha”. 11.7% of pregnancies last 284 days or more, find the variance of the distribution .