An employment agency wants to see which of three types of ads in the help-wanted section of local newspapers is the most effective. Three types of ads (big headline, straightforward, and bold print) were randomly alternated over a period of weeks, and the number of people responding to the ads was noted each week. Do these data support the null hypothesis that there is no difference in the effectiveness of the ads, as measured by the mean number responding, at the 0.01 level of significance?

a. Solve using the p-value approach.
b. Solve using the classical approach.

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e of Advertisemen Lype Bi Bold Headine Straightforward Print 28 Number of responses (replicates 23 42 36 48 31 18 24 26 46 29 34 34 26