posted by Alicia .
Intelligence quotients on the Stanford-Binet intelligence test are normally distributed with a mean of 100 and a standard deviation of 16. Use the 68-95-99.7 rule to find the percentage of people with the following IQs:
a.) between 84 and 100
b.) below 52
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?
The standard devation is the same for b.) as it is for a.)
Yes, of course it is. So how many standard deviations is it to a score of 52?
oh ok so 2.
I meant 3
so would it be
where can I learn the basics of contemporary math? I have a hard time figuring this stuff out
What exactly is contemporary math anyway? How does one define it exactly?