A Survey of College Students Taking the Professional Exam to Be

Multiple Choice

A survey of college students taking the professional exam to be certified as public school teachers shows that 15 percent fail.On a national exam day,12,000 students take the test.Let x denote the number who fail.The mean and standard deviation of the random variable x are,respectively:

A) 1800; 1530
B) 1800; 39.11
C) 10,200; 1530
D) 10,200; 39.11
E) 1200; 35.71