A rope manufacturer tested the breaking strength of several types of ropes over a 10-day period. The results of the study are shown in the accompanying table. Complete parts a through c. Click the icon to view the data. a. Test to determine if inserting the day on which the testing was done was necessary. Use an α = 0.10 level of significance. Determine the null and alternative hypotheses for this test. Choose the correct answer below. O A. Ho: Not all means are equal HA Hd1Hd2 Hd3= = Hd10 OC. Ho: Ha1 = Hd2 Hd3== Hd10 HA: All means are unequal E. Ho: Pd1=Hd2 = Hd3=-=d10 HA: Not all means are equal What is the F-test statistic for this test? F= (Round to two decimal places as needed.) O B. Ho: At least two populations have different means HA: HN HPE HPpp O D. Ho: HNPPE = Hpp HA: At least two populations have different means OF. Ho: At least two means are equal HA: All means are unequal

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