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A researcher is investigating the effects of a new drug on the ability of rats to learn to navigate a maze. She is worried that differences in activity levels might influence the results, so she gives them a baseline activity test and matches them to form eight pairs. One group is then given the drug and the other group a placebo. Here are the results in terms of number of trials it took each pair to navigate the maze without any errors.

821_effects of a new drug.png

(a) State formally the null and alternative hypotheses necessary to conduct a non directional test.

(b) Complete the test at the .05 level of significance.

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Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M92681093

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