Estimating the Binomial with the Normal Distribution · Exercise 28
IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose one individual is randomly chosen. Let X = IQ of an individual.
(a) X ~ _____(_____,_____)
(b) Find the probability that the person has an IQ greater than 120. Include a sketch of the graph, and write a probability statement.
(c) MENSA is an organization whose members have the top 2% of all IQs. Find the minimum IQ needed to qualify for the MENSA organization. Sketch the graph, and write the probability statement.
Its source prints no answer for this problem, so there's nothing to check against.
OpenStax, Introductory Business Statistics 2e · §6.3 Estimating the Binomial with the Normal Distribution · Exercise 28
No hints for this one.
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