Suppose that=.5,= .2,n₁= 20, andn₂= 30. What is the number of successes,X₂, based onp₂?

	a.	.2
	b.	6
	c.	30
	d.	None of the above

It is estimated that 780,000 surgical site infections (SSIs) occur each year. SSIs are the second most common type of healthcare-associated infections in U.S. hospitals and account for an extra $3.5 to $10 billion in healthcare costs per year. The national SSIs rate is 1.9%. A Georgetown medical office was interested in determining if their SSI rate were smaller than the national average. Out of a sample of 277 patients in their study, only one infection occurred. Is the Georgetown medical office SSIs rate less than the national average SSIs rate? ( Note: Use a significance level of .01)

	a.	No, because the P-value is less than .01
	b.	No, because the P-value is greater than .01
	c.	Yes, because the P-value is greater than .01
	d.	Yes, because the P-value is less than .01