Multiple Choice
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 (XS) and large-boned frame (XL) .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 are the degrees of freedom for the t test for two independent samples?
A) 3
B) 25
C) 26
D) 27
Correct Answer:
Verified
Correct Answer:
Verified
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