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Mathematics, 08.10.2019 14:00, EmilyQuinn3053
Some researchers have conjectured that stem-pitting disease in peach tree seedlings might be controlled with weed and soil treatment. an experiment was conducted to compare peach tree seedling growth with soil and weeds treated with one of the two herbicides. in a field containing 10 seedlings, five were randomly selected throughout the field and assigned to receive herbicide a. the remainder was to receive herbicide b. soil and weeds for each seedling were treated with the appropriate herbicide, and, at the end of the study period, the height (cm) was recorded for each seedling. the following results were obtained: herbicide a 87, 80, 80, 76, 73 herbicide b 78, 77, 74, 68, 62 a 90% confidence interval for the difference in mean heights for the two herbicides is (0.2, 14.6). which of the following statements is correct? the p-value for a test of the null hypothesis of equal means and the alternative of different means would be greater than 10% because the interval doesn't include 0. neither of those statements is correct. a 95% confidence interval could not include 0, because we would be even more confident of a difference in the groups.
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