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Assume adult IQ scores are normally distributed with a mean of 100 and a standard deviation...

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Basic Math

Assume adult IQ scores are normally distributed with a mean of100 and a standard deviation of 15

a) What is the probability that a randomly selected adult has anIQ that is less than 115

b) Find the probability that an adult has an IQ greater than131.5 (requirement to join MENSA)

c) Find the probability that a randomly selected adult has an IQbetween 110 and 120

d) Find the IQ separating the top 15% from the others e) Findthe IQ score separating the bottom 10% from the others

Answer & Explanation Solved by verified expert
3.9 Ratings (460 Votes)
Solution Given that mean 100standard deviation 15aPx 115 Px 115 100 15 Pz    See Answer
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