Below are several scenarios that describe research questions or problems. For each scenario indicate the appropriate NHST. Be specific (e.g. if you think a t-test applies note whether it is adependent or independent samplestest). In addition, for each scenario, indicate why the test you choose is appropriate.

a. An industrial/organizational psychologist is interested in whether a company policy allowing employees to work from homereduced the number of sick days employees took.In the year after the policy was implemented, she examines the HR records for employees thatincludetheir sick days. For each employee she records the number of sick days they had in the year before the work-from-home policy was implemented. She then records the number of sick days for each of those same employees in the first year after the policy was implemented.Which NHST would the psychologist use to determine if the work-from-home policy reducedthe number of sick daysthe employees took?In a sentence, briefly explain why this is the appropriate test.

b.A researcher is interested in whether different types of therapy are associated with different rates of relapse after a major depressive episode. Patients at a mental health center complete one of three types of treatment for depression. One group takes a course of a depression medication, a second group completesa psychoanalytic therapy program, and a third group completes a cognitive behavioral therapy program. At a six-month wellness follow-up, the researcher recordswhether or noteach participant had a major depressive episode in the six-months since completing treatment.Which NHST would the researcher use to determine if the different types of therapies are associated with differentrelapse rates?In a sentence, briefly explain why this is the appropriate test.