Question

Suppose that, without even reading the question. you guess on all four question of a true-or-false test. Compare the quantity in column a with the quantity in column b. Choose the best answer.

Column A - P(exactly one right answer)
Column B - P(exactly one wrong answer)

a. The quantity in Column A is greater
b. The quantity in Colunm B is greater
c. The two quantities are equal
d. The relationship cannot be determined from the information given

Answer 1

D. because their are to many outside influences (i.e human preference.)

Answer 2

Thank you!

Answer 3

I would wait on other replies because i could be wrong, is this a stat.'s question?

Answer 4

Its binomial theorem

Answer 5

you can determine the answer to this question, so the answer is not choice D

Answer 6

Let X = # of right answers

P(Exactly one right answer):

P(X = 1) = (4 C 1)*(1/2)^(1)*(1-1/2)^(4-1)

P(X = 1) = 1/4


So the probability of getting exactly one answer correct is 1/4


The same can be said for getting exactly one answer wrong because the probability of success and failure are equal.