Question

The GRE is an entrance exam that most students are required to take upon entering graduate school. In 2014, the combined scores for the Verbal and Quantitative sections were approximately normally distributed with a mean of 310 and a standard deviation of 12.

What percent of scores were between 286 and 322? Round your answer to the nearest whole number.

Answer 1

Answer:it’s 82%

Explanation:

You have to round 81.8 to the nearest whole number so it would be 82%

Answer 2

we have standard deviation of 12 so 298-322 would be 34.1% times 2 which is 68.2%. We also have 12 more in a lower region and we can use normal distribution to find that it would be 13.6% + 68.2%

Answer is 81.8%