Recall that scores on the Wechsler IQ test are normally distributed with mean 100 points and standard
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a. A student’s IQ is at the 95th percentile. Find the student’s IQ. Is it an unusual IQ?
b. Mensa is a high-IQ society with members in more than 100 countries. Membership is open to people who have attained a score within the upper 2 percent of the general population on an approved intelligence test, such as the Wechsler IQ test (Source: Mensa International Limited). What is the cutoff score on the Wechsler IQ test in order to qualify for Mensa? Do all Mensa members have unusual IQs?
c. A person scores 130 points on the Wechsler IQ test. Is that an unusual score? It is high enough to qualify for Mensa?
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a An IQ in the 95 th percentile is 125 points No it is not unusual the probability of a score t...View the full answer
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