The weschler adult intelligence scale is a common IQ test. thedistribuiton of WA
ID: 2919271 • Letter: T
Question
The weschler adult intelligence scale is a common IQ test. thedistribuiton of WAIS scores for persons over 16 is approx.Normal with mean 100 and standard deviation 15. What is the probability that a randomly chosen individual hasa WAIS score of 105 or higher? What are the mean and standard deviation of the average WAISscore xbar for an SRS or 60 people? The weschler adult intelligence scale is a common IQ test. thedistribuiton of WAIS scores for persons over 16 is approx.Normal with mean 100 and standard deviation 15. What is the probability that a randomly chosen individual hasa WAIS score of 105 or higher? What are the mean and standard deviation of the average WAISscore xbar for an SRS or 60 people?Explanation / Answer
What is the probability that a randomly chosen individual hasa WAIS score of 105 or higher?P(X>105)= P((X-)/ >(105-100)/15) = P(Z>0.33) = 0.3707 (check normaltable)
What are the mean and standard deviation of the average WAISscore xbar for an SRS or 60 people?
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