In the study referenced in exercise 10.8, researchers also asked whether or not students bought fast food at least one to two times per week. The data are reported by gender in the table.

a. Find the row, column, and grand totals, and prepare a table showing these values as well as the counts given.

b. Find the percentage of students overall who buy fast food at least 1 or 2 times weekly. Round off to one decimal place.

c. Find the expected number who buy fast food at least 1 or 2 times weekly for each gender. Round to two decimal places as needed.

d. Find the expected number who did not buy fast food at least 1 or 2 times weekly for each gender. Round to two decimal places as needed.

e. Calculate the observed value of the chi-square statistic.

Exercise 10.8

According to a 2017 report, 64% of college graduate in Illinois had student loans. Suppose a random sample of 80 college graduates in Illinois is selected and 48 of them had student loans.

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Buy fast food at least 1-2 times weekly Females Males Yes 138 85 No 160 58