With many babies being delivered by planned cesarean section, Mrs. McDonald’s statistics class hypothesized that there would be fewer younger people born on the weekend. To investigate, they selected a random sample of people born before 1980 and a separate random sample of people born after 1993. In addition to year of birth, they also recorded the day of the week on which each person was born.
Determine which chi-square test is appropriate for the given setting. Which response below gives the correct test with appropriate reasoning?
A) Chi-square test for association because the data come from two independent random samples.
B) Chi-square goodness of fit test because the data came from a single random sample and the variables are quantitative.
C) Chi-square goodness of fit test because the data came from a single random sample with the individuals classified according to two categorical variables.
D) Chi-square test for homogeneity because the data come from two independent random samples.
INCORRECT E) Chi-square test for independence because the data came from a single random sample with the individuals classified according to two categorical variables.