NONstandard Normal Distribution

1
NONstandard Normal Distribution

• Accelerated Math 3

2
Assume that IQ scores are normally distributed
with a mean of 100 and a standard deviation of
15. An IQ score is randomly selected from this
population. Draw a graph, and find the indicated
probability.

• Ex. 1 P(xgt80)
• Ex. 2 P80

3

• Ex. 2 According to data, the 2011 graduates in
  Georgia had a mean of 487 and a standard
  deviation of 108 on the Math portion of the SAT.
• A) Find the percentage of students who scored
  above a 600.
• B) Find the probability of students scoring
  between 400 and 500.