Section 5.2 Homework Question 9 Answer

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Section 5.2 Homework 

9.  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 35 couples. Complete parts​ (a) through​ (c) below.

 

Find the mean and the standard deviation for the numbers of girls in groups of 35 births.

The value of the mean is

 

The value of the standard deviation is

 

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

Values of _______ girls or fewer are significantly low. ​(Round to one decimal place as​ needed.)

 

Values of ______ girls or greater are significantly high. ​(Round to one decimal place as​ needed.)

 

Is the result of 32 girls a result that is significantly​ high? What does it suggest about the effectiveness of the​ method?

The result _______ significantly​ high, because 32 girls is ________ _____ girls.  . A result of 32 girls would suggest that the method ____________

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This question is taken from Math 10 – Introduction to Statistics » Summer 2021 » Section 5.2 Homework