Does it take more effort to be removed from an email list than it used to? A study of 100 large online retailers revealed the following:

a. Set up the null and alternative hypotheses to try to determine whether it takes more effort to be removed from an email list than it used to.
b. Conduct the hypothesis test defined in (a), using the 0.05 level of significance.
c. Does the result of your test in (b) make it appropriate to claim that it takes more effort to be removed from an email list than it used to?

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NEED THREE OR MORE CLICKS YEAR 2009 2008 TO BE REMOVED Yes 39 No 61 93