The Lengths of Pregnancies Are Normally Distributed with a Mean

question 130

Multiple Choice

The lengths of pregnancies are normally distributed with a mean of 264 days and a standard deviation of 15 days. If 36 women are randomly selected, find the probability that they have a mean pregnancy between 264
Days and 266 days.

• A)0.2881
• B)0.7881
• C)0.2119
• D)0.5517

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Definitions:

Interest

The cost of borrowing money or the return on investment, typically expressed as a percentage of the principal amount.

Principal

This term refers to the original sum of money borrowed in a loan or the initial amount of investment before earnings or losses.

Expansionary Gap

A situation where the output of an economy is greater than the full employment output, often leading to inflation.