Consider the following: the aim of a study was to compare th…

Consider the following: the aim of a study was to compare the effects of standard physical therapy vs standard physical therapy and Tai Chi on risk of falling in elderly females.  Twenty four independent living elderly females ages 65 and older were selected.  Pre-test of fall risk was conducted on all participates. Participants were then randomly assigned to either a regular physical therapy group or physical therapy and Tai Chi group. They participated in sessions 3x weekly for 12 weeks.  Measurement of fall risk took place at 12 weeks.   What is the independent variable? 

The null hypothesis states that there will be no difference…

The null hypothesis states that there will be no difference between the mean of group 1 and the mean of group 2. At an a = 0.05, What type of error is made when the obtained p value = 0.03 and the statistical decision was to reject the null and state that there is a difference between group means.