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Hypothesis

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More men than women were randomly assigned to the Clardozan group. After a careful examination of the results, the pharmaceutical company wonders if gender influenced the results. Conduct a test to determine if there was a relationship between gender and group assignment using the .05 level of significance. The 2 x 2 contingency table presented below shows subject assignment by treatment group and by gender.

Male Female
Clardozan 9 6
Placebo 7 8

11. What is the null hypothesis? What is the alternative hypothesis? Is this a one-tailed or a two-tailed test?
12. What test statistic will you use? Why?
13. What is the critical value? What is the value of the test statistic?
14. Would you accept or reject the null hypothesis? Explain your conclusion.

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