1. It is reported that the distribution of people’s IQ measured by a popular IQ test has the mean of 100 and standard deviation of 15. Given this information, what is the probability of randomly sampling a person who score
a.100 or higher?
b. Higher than 115?
c. Between 85 and 115?
2. Given the information in question #1, between what two scores can the probability of randomly sampling a person become 95%? (Hint: The z-scores corresponding to this probability are + 1.96)
The score will be
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