Posted by Alicia on Monday, June 23, 2008 at 9:37pm.
Intelligence quotients on the StanfordBinet intelligence test are normally distributed with a mean of 100 and a standard deviation of 16. Use the 689599.7 rule to find the percentage of people with the following IQs:
a.) between 84 and 100
b.) below 52

contemporary math  bobpursley, Monday, June 23, 2008 at 9:48pm
a) One standard deviation is 16, that is a score of 84. 68 percent will have a score of 100+16, so 34 percent will have a score from 84 to 100.
b. How many standard deviations is a score of 52?

contemporary math  Alicia, Monday, June 23, 2008 at 9:52pm
thank you
The standard devation is the same for b.) as it is for a.)

contemporary math  bobpursley, Monday, June 23, 2008 at 9:54pm
Yes, of course it is. So how many standard deviations is it to a score of 52?

contemporary math  Alicia, Monday, June 23, 2008 at 10:55pm
oh ok so 2.

contemporary math  Alicia, Monday, June 23, 2008 at 11:00pm
I meant 3
so would it be
10016(3) =52
10099.7=.03

contemporary math  pat, Thursday, June 26, 2008 at 1:53pm
where can I learn the basics of contemporary math? I have a hard time figuring this stuff out

contemporary math  Brandon, Thursday, June 26, 2008 at 6:14pm
What exactly is contemporary math anyway? How does one define it exactly?
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