15. 1/3 points I Previous Answers PriviteraStats2 9.E 021 My Notes To demonstrat

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15. 1/3 points I Previous Answers PriviteraStats2 9.E 021 My Notes To demonstrate flavor aversion learning (that is, learning to dislike a flavor that is associated with becoming sick), researchers gave one group of laboratory rats an injection of lithium chloride immediately fallowing consumption of saccharin-flavored water. Lithium chloride makes rats feel sick. A second control group was not made sick after drinking the flavored water. The next day, both groups were allowed to drink saccharin-flavored water. The amounts consumed (in milliliters) for both groups during this test are given below. Amount Consumed by Rats That Were Made Sick (n 4) Amount Consumed by Control Rats (n 4) 13 (a) Test whether or not consumption of saccharn-flavored water differed between groups using a 0.05 level of significance. State the value of the test statistic. (Round your answer to three decimal places.) State the decision to retain or reject the null hypothesis O Retain the null hypothesis. e) Reject the null hypothesis. (b) Compute effect size using eta-squared ( (Round your answer to two decimal places.) You may need to use the appropriate table in Appendix B to answer this question. Refer to the steps of computing a two-independent sample t-test (Section 9.7) and effect size (Section 9.8)

Explanation / Answer

The value of t statistic i,e

t = - 4.012 ,the corresponding p value is 0.01 which is less than 0.05.

Thus the null hypothesis will be rejected.

and the eta squared =t2/ (t2 +(n1+ n2-2)) = 16.09534/(16.09534+6) = 0.73 , which means a large effect..

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