Home

In this study, we surveyed students to see if there was a difference in proportion of preferred ice cream flavor for male and female students. The population for this experiment was students at North Olmsted Study Hall. Tyler came up with this idea since most students probably have a definitive opinion of whether they like vanilla or chocolate more and then decided to compare the results of male and female students since it was an easy variable to find and use. We surveyed 120 students and received 66 responses. Using several graphs, we concluded that there was no difference in proportion for male and female students’ ice cream preference? We used pie graphs to find the proportions of the two variables.

The question investigated in our survey is, “does ice cream preference of chocolate or vanilla ice cream differ between males and females at North Olmsted High School?”  The survey was conducted using a simple random sample of students at North Olmsted High School, we used Minitab to select 75 random males and 75 random females and sent them surveys.  Of the 120 surveys we sent out, 73 were returned. Once we received our data back and ran a two proportion z-test on it, with vanilla as a success, testing for a difference in the proportions.  We calculated a p-value of 0.409 for this test.  Since the p-value was larger than the .05 significance level we used, we determined that we fail to reject the null hypothesis of there being a difference in the proportions.  This means that we cannot disprove our null hypothesis, meaning we cannot definitively say that there is a difference between