What is the probability that the investment has a return of 10% or less? (2 marks). A person must score in the upper 5% of the population on an IQ test to qualify for a particular occupation. If IQ scores are normally distributed with a mean of 100 and a standard deviation of 15, what score must a person have to qualify for this occupation? (4 marks

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Suppose that the return for a particular investment is normally distributed with a population

mean of 10.1% and a population standard deviation of 5.4%.

  1. What is the probability that the investment has a return of at least 20%? (2 marks)
  2. What is the probability that the investment has a return of 10% or less? (2 marks).

A person must score in the upper 5% of the population on an IQ test to qualify for a particular

occupation.

  1. If IQ scores are normally distributed with a mean of 100 and a standard deviation of

15, what score must a person have to qualify for this occupation? (4 marks).

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