Degree of freedom associated with test statistic

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Reference no: EM13147932

After receiving some complaints from the readers, your newspaper decides to redesign its front page. Two new formats, B and C, were developed and tested against the current format, A. A total of 75 correspondents were randomly selected and 25 respondents were randomly assigned to each of three format conditions. The respondents were asked to evaluate the effectiveness of the format on an 11-point scale (1=poor, 11=excellent).

a. State the null hypothesis.

b. What statistical test should you use?

c. What are the degree of freedom associated with the test statistic?

Reference no: EM13147932

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