A group of employees were asked to complete a survey . the survey asked employees if they preferred working from home or working in the office and if they preferred making coffee at home or buying coffee the results are partially shown in the table 60% of the employees who preferred coffee at home , prefer to work in the office

57% (rounded) of the employees who prefer to buy coffee prefer to work in the office

what is the value of a•b?

enter your answer in the box

a•b= __

Two researchers are attempting to create a new psychotherapy protocol that more reduces panic attacks. they believe that they have succeeded and are now in the clinical trial period of their protocol's development. they are working with several cohort groups, some of which have been through the new protocol, while others have done the standard protocol currently recommended. if these researchers are interested in evaluating the difference in the percentage of test subjects who successfully decreased their panic attacks in 2 months on the new protocol versus the percentage of test subjects who successfully decreased their panic attacks in 2 months with the traditional protocol, which of the following statistical tests would be most appropriate? a. analysis of variance (anova) b. correlation c. chi-square test d. paired t-test e. independent t-test