A recent poll of young college women between the ages of 18 and 21 years found that 44% want to marry before they are 25, 32% want to marry between the ages of 25 and 30, 15% want to marry between the ages of 30 and 35, and 9% want to marry after the age of 35 or not at all. You poll 100 women aged 18 to 21 at your college and find that 28 want to marry before they are 25, 40 want to marry between the ages of 25 and 30, 19 want to marry between the ages of 30 and 35, and 13 want to marry after the age of 35 or not at all.

a. Create a table of observed and expected frequencies.

b. Calculate χ².

c. Interpret the result at the .05 and .01 error levels. Is the research hypothesis supported? If so, with what level of confidence?