The the percentage of people taking a test for who score above 862 is _%?

Question

Scores on the GRE( graduated record examination) are normally distributed with a mean of 580 and a standard distributed of 94 use the 68-95-99 .7 rule to find the percentage of people taking the test who score above 862

The the percentage of people taking a test for who score above 862 is _%?

Answer 1

Hi Madisum, the 68-95-99.7 rule tells us only .3 percent of the population is above three standard deviations and below three standard deviations.

Since the normal curve is symmetric, only half of .3 percent, or .15 percent is above three standard deviations.

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