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 states that there is no difference in the mean number of days it takes for patients with small-boned frames versus those with large-boned frames to progress to a predetermined point. Therefore, choice A is the best choice as it represents the null hypothesis. Choices B, C, and D all propose alternative hypotheses.

A Physical Therapist Is Interested in Whether People with Different