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For the population of students who have taken the GRE:a. What proportion have GRE scores less than 145?b. What proportion have GRE scores greater than

For the population of students who have taken the GRE:a. What proportion have GRE scores less than 145?b. What proportion have GRE scores greater than 157?c. What is the minimum GRE score needed to be in the highest 20% of the population?d. If a graduate school accepts only students from the top 10% of the GRE distribution, what is the mini-mum GRE score needed to be accepted?

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