Question 91:

Asked on February 24, 2008

Tags: Normal Curve

1

Answer:

No answer provided yet.Use the Interactive graph of the standard normal curve. Since you want to know just the percent above 134, you’d use the one-tailed area (the second graph). Enter the mean (100) and standard deviation (16) in the boxes on the graph and hover over the graph until the x-value reaches 134, which is right around 2.1 standard deviations above the mean. You’ll then see that the area above this point (the white area) is around 1.58%. Or less than 2% of the population would have an IQ score higher than your 134 (Smarty!). See also question 90 for a similar example.