A variable that we purposefully change or manipulate is called the independent variable. The thing that changes in response is called the dependent variable. This creates a cause and effect relationship.
Medicare Eligibility Requirements. To be entitled to Medicare, you must be a U.S. citizen or a permanent legal resident, and answer yes to at least one (1) of the following questions:
Part A eligibility, if you are 65 or older. You are eligible for Part A Medicare at no cost, if: You currently receive or are eligible to receive Social Security benefits. To be eligible to receive Part A at now cost, you must have 40 credits accumulated through the payment of payroll taxes.