17. Medical Operations The director of a medical hospital feels that her surgeons perform fewer operations per year than the national average of 211. She selected a random sample of 15 surgeons and found that the mean number of operations they performed was 208.8. The standard deviation of the sample was 3.8. Is there enough evidence to support the director's feelings at a = 0.10? Would the null hypothesis be rejected at a = 0.01?

Question
17. Medical Operations The director of a medical hospital
feels that her surgeons perform fewer operations per
year than the national average of 211. She selected a
random sample of 15 surgeons and found that the mean
number of operations they performed was 208.8. The
standard deviation of the sample was 3.8. Is there enough
evidence to support the director's feelings at a = 0.10?
Would the null hypothesis be rejected at a =
0.01?
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Transcribed Image Text

17. Medical Operations The director of a medical hospital feels that her surgeons perform fewer operations per year than the national average of 211. She selected a random sample of 15 surgeons and found that the mean number of operations they performed was 208.8. The standard deviation of the sample was 3.8. Is there enough evidence to support the director's feelings at a = 0.10? Would the null hypothesis be rejected at a = 0.01?