A phenomenon known as "summer melt" occurs when students who were admitted and scheduled to start college directly after high school do not show up for their first semester of college. Figure 12.10 shows the number of people, in a sample of 280 recent high school graduates, who did not show up to college as scheduled, by level of family income. 100 Did Melt 88 90 Did Not Melt 80 50 70 50 50 Number of Students Who Experienced Summer Melt 40 40 30 20 10 10 72 64 22 18 16 0 Low Medium Income High ure 12.10 Summer Melt for Recent High School Graduates, by Family Income, Frequencies A dean of admission at a college is trying to minimize the percentage of the incoming first-year class that melts" over the summer. He looks at Figure 12.10 and concludes that there is a relationship between family income and summer melt. The assistant dean of admission looks at the data and thinks that her boss is wrong. Demonstrate whether the dean or assistant dean is correct by using what you know about expected frequencies.