+++++Please only fill in blanks An employment agency wants to see which of three

Question

+++++Please only fill in blanks

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 headlines, 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 .01 level of significance?

(a) Find the test statistic. (Give your answer correct to two decimal places.)
Test Stat:___________
(b) Find the critical value. (Give your answer correct to two decimal places.)
Critical Value:________

Type of Advertisement Big Headline Straightforward Bold Print Number of responses (replicates) 23 27 29 34 31 41 31 25 37 28 29 32 41 21 30 27 44

Explanation / Answer

Using technology, we can get the following summary:

Hence,

a)

F = test statistic = 3.428131196 [ANSWER]

***************************

b)

Also,

Fcrit = 6.514884102 [ANSWER]

Anova: Single Factor SUMMARY Groups Count Sum Average Variance Column 1 6 184 30.66667 39.46667 Column 2 5 133 26.6 14.8 Column 3 6 213 35.5 37.9 ANOVA Source of Variation SS df MS F P-value F crit Between Groups 218.4373 2 109.2186 3.428131 0.06141 6.514884 Within Groups 446.0333 14 31.85952 Total 664.4706 16

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