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
Question 2
A Company manufactures women's hosiery. The company sells slightly irregular panty hose through a mail-order catalog service. If the company produces 300,000 pairs of hose per day and the probability of a pair not being irregular is 0.92, the average number that will be available for the catalog order department is:
a. 22080
b. 148.59
c. 24000
d. 154.92
e. 15.49
Teachers
The proportion of men and women with elevated blood pressure or taking hypertension medication incre
Dewey and the reformers attacked classes, such as this one, circa 1900, where students sat up straig
Should School Meals Align with the Dietary Guidelines for Americans?
College and university attendance is associated with developmental advances