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Name: Assume that different groups of couples use a particular method of gen
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Description: Assume that different groups of couples use a particular method of gender selection and each couple gives birth to one baby. This method is designed to increase the likelihood that each baby will be a girl, but assume that the method has no effect,

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Assume that different groups of couples use a particular method of gender selection and each couple gives birth to one baby. This method is designed to increase the likelihood that each baby will be a girl, but assume that the method has no effect, so the probability of a girl is

0.5.

Assume that the groups consist of

couples. Complete parts (a) through (c) below.

a. Find the mean and the standard deviation for the numbers of girls in groups of

births.

The value of the mean is

μ=

22.522.5.

(Type an integer or a decimal. Do not round.)

The value of the standard deviation is

σ=

3.43.4.

(Round to one decimal place as needed.)

b. Use the range rule of thumb to find the values separating results that are significantly low or significantly high.

Values of

15.815.8

girls or fewer are significantly low.

(Round to one decimal place as needed.)

Values of

29.229.2

girls or greater are significantly high.

(Round to one decimal place as needed.)

c. Is the result of

girls a result that is significantly high? What does it suggest about the effectiveness of the method?

The result

is not

significantly high, because

girls is

less than

29.229.2

girls. A result of

girls would suggest that the method

is not effective.

(Round to one decimal place as needed.)

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