Suppose that SAT mat scores for a year are approx. normal. With a mean of 510 and a sigma of 100. What is the probability a random score selected is greater than 610?

Suppose that SAT mat scores for a year are approx. normal. With a mean of 510 and a sigma of 100. What is the probability that randomly selected score is greater than 710?

What is a lurking variable?

If your height is 54 inches, and the mean is 58 inches with a standard deviation of 1.2, in which standard deviation category do you fall?

Your height is 54 inches, and the mean is 58 inches with a standard deviation of 1.2. Your friends height is 60 inches. Who is relatively farther from the mean?

What is standard deviation?

Jackie is within 2 standard deviations of the mean. How much data is left in the data?

What is the genreal rule for data that is approximately normal?

If a data set is approximately normal with a mean of 67 and a sigma value of 7, will data be spread out?

If a study is subject blind then...

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