drk1980
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A particular association determines membership on the basis of members' IQ scores. Only those persons who have documented IQ scores at least 2 standard deviations above the mean on the Wechsler Adult Intelligence Scale (WAIS) are eligible for admission. Of a group of 200 people randomly selected from the population at large, how many would be eligible for membership to this society?<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />
A. 1
B. 2
C. 3
D. 4
E. 5
kindly explain your choice!
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| skyhigh
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2 sds is 2.5 % above the mean, so 2.5% of 200 is 5. ans E
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| mjl1717
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Even under exam circumstances this q may look bad but isnt. Ill just state how Id start to solve it playing with #s
1)Median is middle # 2) 1 S.D. is 34% 3)2 S. D. is 47.5% 4) Id probably use 100 and double my result mean and mode is not needed here only the facts of a unskewed bellshape curve.
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Smell the coffee! "Is That an Osler move??"
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| msyamp
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If you think you can You can! If you think you cant you are right again!!
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| mjl1717
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yes msyamp a pic is a thousand words 
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Smell the coffee! "Is That an Osler move??"
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| robin082006
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good picture, thank msyamp
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| drk1980
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thanks ppl!
abso true mjl1717, the most easiest thing can appear complex if one allows the nerves to take over! Disastrous consequences! 
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