20. [-/5 Points] DETAILS DEVORESTAT9 9.5.063. MY NOTES 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 21 female control rats was 30 g and for 20 female low-dose rats was 57 g. Does this data suggest that there is more variability 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 of for low-dose treatment and , for control condition.) OH: 1 , 2 = 0,2 2 H: 01 2202 O Ho: 1 2 2 =02 H: 01 2 2 # 02 OH: 1 2 2=02 2 H: 1 2> 02 2 O Ho: 1 2= 02 H: 01 2 202 Calculate the test statistic. (Round your answer to two decimal places.) f = What can be said about the P-value for the test? O P-value > 0.100 O 0.050