The GRE is an extrance 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.

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the answer is (-8,-5)

step-by-step explanation:

the endpoint to midpoint is half the length. the length is (-2,-1) so when you are at the midpoint just add it to it to find your answer -6+(-2)= -8 and -4+(-1)=-5 so (-8,-5)

the answer is 1/4

step-by-step explanation:

answer:

a=9

step-by-step explanation: lmk if you need a explanation