An ANOVA was run on the weight of randomly selected packages shipped by delivery

Question

An ANOVA was run on the weight of randomly selected packages shipped by delivery companies A, B, and C. Use = 0.05 to determine if there is a difference in the average package weights shipped by these three delivery companies.

Safari File Edit View History Bookmarks Window Help d2.pdx.edu Portland State Uni fbisicsslAccessibility.php?text if%20people%20act3620with%20rati My Home STAT-241-001: APPLI Rebecca Davenport Portland State STAT-241-001: APPLIED STATS FOR BUSINESS (Spring 2017 Course Home Course Content Activities v People v Grades Help v Quiz 8 Quiz Est, Leng h: 2:00:00 Rebecca Davenport: Attempt Questions SUMMARY Groups Count Sum Average Variance 0 of 5 questions saved 95.4 11.92S 27,7421 64 67.2771. Page 1: 48 21.7657 1 2 3 4 5 ANOVA Sol e of Variation MS P-value F cri 2 72.682 Between Groups 45.363 867 0,1793 Legend within Groups 817,495 21 38,928 962.858 23 Q saved Response What are the correct hypotheses? Unsaved Response 0 Info Item Ho: His H2 of the different H2 H1 H2 H2 Quiz Status H1: H1 H2 H3 Quiz started 2620%20

Explanation / Answer

Solution:-

Option B is correct

The null hypothesis for an ANOVA always assumes the population means are equal.

Hence, we may write the null hypothesis as: H0: µ1 = µ 2 = µ 3

Since the null hypothesis assumes all the means are equal, we could reject the null hypothesis if only mean is not equal.

Thus, the alternative hypothesis is: Ha: At least one mean pressure is not statistically equal.

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