Question

Each question on a multiple choice test has five equally likely answers. If Nicole guesses randomly on four questions, what is the probability she will answer at least one correctly?
(a) .25
(b) .47
(c) .5
(d) .59
(e) .8

Answer 1

Hint:

P(At least one correct) = 1 - P(None correct)

Answer 2

probability of getting the question wrong is 4/5. since there are 4 ques. you have to multiply 4 times. Then u get .41 and subtract that from 1 to get .59

Answer 3

you got it

Answer 4

thanks

Answer 5

yw