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Scores on a certain intelligence test for children between ages 13 and 15 years are approximately...

Scores on a certain intelligence test for children between ages 13 and 15 years are approximately normally distributed with μ=106 μ=106 and σ=24 σ=24 .

(a) What proportion of children aged 13 to 15 years old have scores on this test above 96 ? (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 25 percent of the distribution. Answer:

(c) Enter the score which marks the highest 15 percent of the distribution. Answer:

please explain how you got your answer step by step . Thank you

Math   Statistics-And-Probability   
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