Question: A billing company that collects bills for doctor’s offices in the area is concerned that the percentage of bills being paid by Medicare has risen. Historically that percentage has been 31%. An examination of 8368 recent bills reveals that 32% of these bills are being paid by Medicare. Is this evidence of a change in the percentage of bills being paid by Medicare.

a. Write appropriate hypothesis

b. Check the assumptions and conditions

c. Perform the test and find the P-value

d. State your conclusion

e. Do you think this difference is meaningful? Explain.