Scenario 3.1a: The IQ scores of a certain college follow a normal distribution with…

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Scenario 3.1a: The IQ scores of a certain college follow a normal distribution with

µ=115 and s=12. What is the likelihood that a student would score below 100?

Scenario 3.1b: The National Vital Statistics Report reveals that the duration of human

pregnancies is normally distributed with µ =270 days and s =15 days. What is the

likelihood that a pregnancy would last between 260 and 280 days (8.5 and 9.5 months) ?

Scenario 3.1c: The National Center for Health Statistics revealed that weights of

American women aged 20-29 are normally distributed with µ =140 lbs. and s =30 lbs.

What is the likelihood that an American woman in this age group would weigh more than

200 lbs.?

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