The following table lists the number of pages in four different types of magazin

Question

The following table lists the number of pages in four different types of magazines. (a) Using a significance level of 5%, test the hypothesis that the four magazine types have the same average length. (b)Eliminate one magazine type that you now feel has an average length different than the others. Redo the hypothesis test, testing that the remaining three averages are statistically the same. Use a new solution sheet. Based on this test, are the average lengths for the remaining three magazines statistically the same? (c)Which two magazine types do you think have the same variance in length? (d)Which two magazine types do you think have different variances in length?

Home Decorating News Health Computer 172 87 82 104 286 94 153 136 163 123 87 98 205 106 103 207 197 101 96 146

Explanation / Answer

(a) Using a significance level of 5%, test the hypothesis that the four magazine types have the same average length.

a. Ho: µd = µn = µh = µc

b. At least one average is different

c. df(n) = 3; df(d) = 16

e. 8.69 f. 0.0012

h. Decision: Reject null; Conclusion: At least one average is different

I can gladly help you with all your questions but you should post it on a new question

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.