A physical therapist is interested in whether people with different bone structures will be affected differently by her new therapy program.She randomly chooses two groups of patients based on bone type: small-boned frame (X_S) and large-boned frame (X_L) .Patients all had similar injuries.She measures the number of days each person takes to progress to a predetermined point.Here is the data:
What is the null hypothesis?

Question

A physical therapist is interested in whether people with different bone structures will be affected differently by her new therapy program.She randomly chooses two groups of patients based on bone type: small-boned frame (X_S) and large-boned frame (X_L) .Patients all had similar injuries.She measures the number of days each person takes to progress to a predetermined point.Here is the data:

What is the null hypothesis?

Quizplus · Accepted Answer

The null hypothesis in this case would be that there is no difference in the number of days it takes for people with small-boned frames versus large-boned frames to progress in the therapy program. Specifically, it would be that the mean number of days for the small-boned frame group (µ_S) is equal to the mean number of days for the large-boned frame group (µ_L). Therefore, choice A is the correct answer.

A Physical Therapist Is Interested in Whether People with Different