Question

Scores on a certain intelligence test for children between ages 13 and 15 years are approximately normally distributed with μ=96

and σ=21
.

(a) What proportion of children aged 13 to 15 years old have scores on this test above 82 ? (NOTE: Please enter your answer in decimal form. For example, 45.23% should be entered as 0.4523.)
Answer:
(b) Enter the score which marks the lowest 20 percent of the distribution.
Answer:
(c) Enter the score which marks the highest 10 percent of the distribution.
Answer:

Answer 1

Answer: Should be around 0.747507, 78.326, 122.913