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What percentage of the population has iqs

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This is an example question for my exam next week. How would I solve these question Excel?

Suppose that the IQ in the United States is normally distributed with µ = 100 points and standard deviation s = 15 points. Using the normal curve determine each of the following:

a. What percentage of the population has IQs between 85 and 115 points?

b. What percentage of the population has IQs between 70 and 130 points?

c. What percentage of the population has IQs between 55 and 145 points?

d. What is the probability that any IQ selected is more than 115 points?

e. What is the probability that any IQ selected is between 130 & 145 points?

HINT: Draw a normal curve using the parameter values provided!

Reference no: EM131987433

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