Intelligence tests are designed to provide a normal distribution of IQ scored whith a mean of 100 and a standard deviation of 15.
* What IQ scores are in the highest 5% of all scores?
*What IQ scores are in the lowest 10% of all scores?
What is the probability of a randomly selected person having an IQ score about 80%?
What is the probability of a randomly selected person having an IQ score between 120 and 130
What is the probability of a randomly selected person having an IQ score below 94
What is the probability of a randomly selected person having an IQ score between 74 and 109?