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 44 couples. Complete parts (a) through (c). a) Find the mean and the standard deviation for the number of girls in groups of 44 births. b) Use the range rule of thumb to find the values separating results that are significantly low or significantly high c) Is the result of 31 girls a result that is significantly high? What does it suggest about the effectiveness of the method? The result ___ significantly high, because 31 girls is (equal to, less than, greater than) ___ girls. A result of 31 girls would suggest that the method (is/is not) effective
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
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
a) Find the mean and the standard deviation for the number of girls in groups of 44 births.
b) Use the
c) Is the result of 31 girls a result that is significantly high? What does it suggest about the effectiveness of the method?
The result ___ significantly high, because 31 girls is (equal to, less than, greater than) ___ girls. A result of 31 girls would suggest that the method (is/is not) effective
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