A nurse claims that the variations of the lengths of newborn males is different from the variations of the lengths of newborn females. A sample of 10 newborn males is selected and the standard deviation is 1.9 inches. The standard deviation of a sample of 11 newborn females is 0.9 inch. Testing the nurse's claim at= 0.05 which of the followingNOTcorrect?

a.	The critical value is 3.78.
b.	The critical value is 3.02.
c.	Reject the null hypothesis.
d.	There is enough evidence to support the claim.