3. Find Z score 4. Reject or not reject5. There is or is not enough evidence to support the claim or there is or is not enough evidence to reject the claim

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 = 0.05? Assume that the population is approximately normally distributed. Use the critical value method and tables. Part 1 of 5 (a) State the hypotheses and identify the claim. How - 211 not claim HM 211 claim This hypothesis test is a one-tailed V test. Part: 1 / 5 Part 2 of 5 (b) Find the critical value(s). Round the answer(s) to three decimal places. If there is more than one critical value, separate them with commas, Critical value(s): X