Which of the following would be the recommended action if the expected frequency for a particular category is less than 5 in the goodness-of-fit chi-square test?
a. Decrease the significance level so that each category will have an expected frequency greater than 5.
b. Combine adjacent cells so that the result will have an expected frequency greater than 5.
c. Increase the sample size so that each category will have an expected frequency greater than 5.
d. Either b or c could be used to ensure that each category will have an expected frequency greater than 5.
e. Either a, b or c could be used to ensure that each category will have an expected frequency greater than 5.
Question 2
The chi-square test statistic is chi-squared distributed with n - 1 degrees of freedom only if the:
a. population is normally distributed.
b. sample is normally distributed.
c. sample has a Student t-distribution with degrees of freedom equal to n - 1.
d. population has a Student t-distribution with degrees of freedom equal to n.
Part A - Calculating the expected number of each phenotype
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