Medical OperationsThe director of a medical hospital feels that her surgeons perform fewer operations per year than the national average of211

.She selected a random sample of15

surgeons and found that the mean number of operations they performed was210.6

.The standard deviation of the sample was3.8

.Is there enough evidence to support the director's feelings at=

0.10

?Assume that the population is approximately normally distributed. Use theP

-valuemethod with a TI-83 Plus/TI-84 Plus calculator.

1) state the hypotheses and the claim

2) find P-value

3) deny or do not deny null hypothesis

4) is there enough evidence to support or deny claim