You read a study that says 36% of college students nationwide change their intended major between their freshman and senior years. You get permission to do an exit poll of your college’s graduating seniors. Of the 647 respondents, 268 report having changed their major at some time during their college years.

a. State the research hypothesis.

b. What is the df for this study?

c. Complete the following table:

d. Calculate χ².

e. Interpret the result at the .01 error level. Is the research hypothesis supported?

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Changed Major No. Observed No. Expected Didn't Change Major No. Observed No. Expected