A test consists of 10 multiple choice questions, each with five possible answers, one of which is correct. To pass the test a st

Question

3 years ago

7

udent must get 60% or better on the test. If a student randomly guesses, what is the probability that the student will pass the test?

1 answer:

Softa [21] · Answer 1 · 2021-12-28T19:43:55+03:00

Answer:

0.006369

Step-by-step explanation:

Given that a test consists of 10 multiple choice questions, each with five possible answers, one of which is correct.

By mere guessing p = probability for a right answer = 1/5 =0.20

There are two outcomes and each question is independent of the other.

X no of questions right is Bin (10,0.20)

the probability that the student will pass the test

= prob of getting more than 60%

= $P(X\geq 6)$

=0.006369