If the correlation of X and Y is 0.30,the standard deviation of X is 2and the standard deviation of Y is 0.60,what is the covariance?

	a.	1.63
	b.	None of these.
	c.	0.72
	d.	1.20
	e.	0.36

Professors project that students at CCNY would score an average of 62 on a standardized exit exam if it were required to obtain a degree in economics. To test this, a group of professors samples 35 students who score an average of 68 on the exam with a sample standard deviation of 13. What is the test statistic for the hypothesis that the population average is 62?

	a.	1.00
	b.	None of these
	c.	2.73
	d.	9.85
	e.	0.87