i4 points I Previous Answers DevoreStat9 9E.063. My Notes Ask Your Toxaphene is
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i4 points I Previous Answers DevoreStat9 9E.063. My Notes Ask Your Toxaphene is an Insecticide that has been identified as a pollutant in the Great Lakes ecosystem. To investigate the effect of toxaphene exposure on animals, groups of rats were given toxaphene in their diet. A study reports weight gains (in grams) for rats given a low dose (4 ppm) and for control rats whose diet did not include the insecticide. The sample standard deviation for 24 female control rats was 28 g and for 18 female low-dose rats was 51 g. Does this data suggest that there is more variablity in low-dose weight gains than In control weight gains? Assuming normality, carry out a test of hypotheses at significance level 0.05. State the relevant hypotheses. (Use 1 for low-cose treatment and 2 for control condition.) Ho: 12-22 Ha : ,-2022 o Ho: 12 -22 HO: 12 = 22 Calculate the test statistic. (Round your answer to two decimal places.) t- 30 what can be said about the P-value for the test? P-value 0.100 0.050Explanation / Answer
F test statistic, F= S12 / S22 = 28/51 = 0.55
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