Probability related to distribution of sat scores

Reference no: EM1393163

The distribution of SAT scores is normal with a m=500 and a standard deviation of o=100. What SAT scores (X values) separate:

a. The middle 60% from the rest of the distribution.

b) The middle 80% from the rest of the distribution.

c) What is the minimum SAT scores needed to be in top 20%

Reference no: EM1393163

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