7. (10 points) The Wechsler Adult Intelligence Scale-Revised (WAIS-R) follows a Normal model with mean 100...

 

Transcribed Image Text:

7. (10 points) The Wechsler Adult Intelligence Scale-Revised (WAIS-R) follows a Normal model with mean 100 and standard deviation 15. a. Draw and clearly label the model in order to use the Empirical Rule. b. Approximately what percentage of adults under this model will have a score under 852 c. Approximately what percentage of adults under this model will have scores between 70 and 115? d. Would it be unusual to have a score over 150? Show mathematical support for your answer. Think! 7. (10 points) The Wechsler Adult Intelligence Scale-Revised (WAIS-R) follows a Normal model with mean 100 and standard deviation 15. a. Draw and clearly label the model in order to use the Empirical Rule. b. Approximately what percentage of adults under this model will have a score under 852 c. Approximately what percentage of adults under this model will have scores between 70 and 115? d. Would it be unusual to have a score over 150? Show mathematical support for your answer. Think!