out A. 0.7734 B. 0.3789 C. 0.8023 D. 0.2266 E. None of the above. (b) The scores of adults on an IQ test are approximately Normal with mean 100 and standard deviation 15. Corinne has 118 on such test. She scores higher than what percent of all adults?
(a) The proportion of observations from standard
A. 0.7734
B. 0.3789
C. 0.8023
D. 0.2266
E. None of the above.
(b) The scores of adults on an IQ test are approximately Normal with mean 100 and standard deviation 15. Corinne has 118 on such test. She scores higher than what percent of all adults?
A. About 12%.
B. About 50%.
C. About 88%.
D. About 98%.
E. None of the above.
(c) The scores of adults on an IQ test are approximately Normal with mean 100 and standard deviation 15. The organization MENSA, which calls itself 'the high IQ society', requires an IQ score of 130 or higher for membership. About what percent of adults would qualify for membership?
A. 2.5%
B. 67%
C. 5%
D. 95%
E. None of the above.
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