In 2006, the average combined SAT score (reading + verbal +writing) for college-

Question

In 2006, the average combined SAT score (reading + verbal +writing) for college-bound students in the United States was 1518(out of 2400). Suppose that approximately 45% of all highschool graduates took this test, and that 100 high school graduatesare randomly selected throughout the United States. Which ofthe following random variables has an approximate binomialdistribution? If possible, give the values for n and p.

a) The number of students who took the SAT
b) The scores of the 100 students on the SAT
c) The number of students who scored above average on the SAT
d) The amount of time it took each student to complete the SAT

I understand A which is 45 students, but how do you calculate thevalues for b,c, and d. It is not a multiple choice. You got to calculate eachindividual value. In 2006, the average combined SAT score (reading + verbal +writing) for college-bound students in the United States was 1518(out of 2400). Suppose that approximately 45% of all highschool graduates took this test, and that 100 high school graduatesare randomly selected throughout the United States. Which ofthe following random variables has an approximate binomialdistribution? If possible, give the values for n and p.

a) The number of students who took the SAT
b) The scores of the 100 students on the SAT
c) The number of students who scored above average on the SAT
d) The amount of time it took each student to complete the SAT

I understand A which is 45 students, but how do you calculate thevalues for b,c, and d. It is not a multiple choice. You got to calculate eachindividual value.

Explanation / Answer

A is the correct answer--- no need to examine b, c, and d!

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