entomologist is investigating which of two fumigants, F1 or F2, is more effective in controlling parasites in tobacco plants. To compare the fumigants, nine fields of differing soil characteristics, drainage, and amount of wind shield were planted with tobacco. Each field was then divided into two plots of equal area. Fumigant F1 was randomly assigned to one plot in each field and F2 to the other plot. Fifty plants were randomly selected from each field, 25 from each plot, and the number of parasites were counted. The data are in the following table. Field 1 2 3 4 5 6 7 8 9 Fumigant F1 77 40 11 31 28 50 53 26 33 Fumigant F2 76 38 10 29 27 48 51 24 32 (a) What are the populations of interest? This answer has not been graded yet. (b) Do the data provide sufficient evidence to indicate a difference in the mean level of parasites for the two fumigants? Use α = .10. Report the p-value for the experimental data. (Let d = F1 − F2.) t = 1.75 p-value = .8
entomologist is investigating which of two fumigants, F1 or F2, is more effective in controlling parasites in tobacco plants. To compare the fumigants, nine fields of differing soil characteristics, drainage, and amount of wind shield were planted with tobacco. Each field was then divided into two plots of equal area. Fumigant F1 was randomly assigned to one plot in each field and F2 to the other plot. Fifty plants were randomly selected from each field, 25 from each plot, and the number of parasites were counted. The data are in the following table.
Field 1 2 3 4 5 6 7 8 9 Fumigant F1 77 40 11 31 28 50 53 26 33 Fumigant F2 76 38 10 29 27 48 51 24 32
(a) What are the populations of interest?
This answer has not been graded yet.
(b) Do the data provide sufficient evidence to indicate a difference in the mean level of parasites for the two fumigants? Use α = .10. Report the p-value for the experimental data. (Let d = F1 − F2.) t = 1.75 p-value = .865
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