As the population ages, there is increasing concern about accident-related injuries to the elderly. An article reported an experiment in which the maximum lean angle - the furthest a subject is able to lean and still recover in one step - was determined for both younger (21-29) and older (67-81) females. The sample included 10 younger and 5 older females. Which type of test will you use to determine if the lean angles are the same for both young and old females? t-test paired t-test z-test need more information