IQ is normally distributed with a mean of 100 and a standarddeviation of 15. Suppose an individual is randomly chosen. a) Findthe probability that the person has an IQ greater than 125. b) Findthe probability that the person has an IQ score between 105 and118. c) What is the IQ score of a person whose percentile rank isat the 75th percentile, ?75? d) Use the information from part (c)to fill in the blanks and circle the correct choice in thefollowing statement. ________% of the individuals (persons) have IQscore less than/more than __________ e) “MENSA†is an organizationwhose members have the top 2% of all IQs. Find the minimum IQneeded to qualify for the “MENSA†organization.
