Hypothesis testing is used to state a claim based on a parameter and test the stated theory (Vasilopoulos, 2011). Crounse Corporation is considering making annual physicals mandatory for all employees. The company hypothesizes that employees who receive annual physicals will incur lower medical costs. A one-sample hypothesis test could be used to prove or disprove the company’s theory. A null hypothesis shows no relationship between two groups (Mirabella, 2011). In the case of annual physicals, the null hypothesis would show no difference in medical costs for employees who have had an annual physical versus employees who have had no annual physical. Crounse would need to prove its theory, the alternate hypothesis; if employees receive
