w-Treatment Patie
A researcher conducted a study to determine whether a new type of phys- ical therapy would help people recovering from knee injuries. The study included 10 patients, and 5 physical therapists.
The researcher decided to conduct the experiment using a matched pairs design, as follows: Two patients were (randomly) assigned to each physical therapist. Then, one of the two patients was randomly chosen to receive the new treatment, while the other received the old treatment.
After one week, the researcher measured each patient’s improvement in
(a) Describe the benefit of conducting a matched pairs experiment in this way.
(b) The table/image attached to this question shows the data obtained from this experiment:
By hand, carry out a t-test to see if the mean difference in ROM improvements between the two treatments (New minus Old) is greater than zero.
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