Using IQ Scores

Using IQ Scores (5 points) Remember, IQ scores have a mean of u = 100, and an standard deviation of o = 15) 23. What percentage of people score less than 90 on IQ tests? (1 point) 24. What IQ score separates the top 10% of IQ scores from the bottom 90%? (1 point) 1730 7 19 21 119.2 1 72 25. What is the z-score for an individual IQ score of 110? (1 point) 26. If I collect a random sample of 9 participants from the general population, what is the probability that the sample will have a mean IQ score greater than u = 110? (2 points)