Suppose an test consisted of 10 multiple choice problems, each with five possible responses (A-E), only 1 of which is correct. I

Question

3 years ago

12

Suppose an test consisted of 10 multiple choice problems, each with five possible responses (A-E), only 1 of which is correct. I

f a student randomly guesses the answers to each question then what is the probability that a student guesses the correct answer to exactly 7 questions?

Mathematics

1 answer:

lana66690 [7] · Answer 1 · 2022-07-13T10:35:53+03:00

lana66690 [7]3 years ago

6 0

Answer:

Step-by-step explanation:

$10C_{7}\times (0.2)^{7} \times (0.8)^{3}\\$