On a multiple choice test with 17 questions, each question has four possible answer, one of which is correct. For students who g

Question

3 years ago

9

uess at all answers, find the mean for the number of correct answers.
a. 12.8
b. 8.5
c. 4.3
d. 5.7

1 answer:

Virty [35] · Answer 1 · 2022-03-22T18:06:24+03:00

Virty [35]3 years ago

3 0

Answer:

C. 4.3

Step-by-step explanation:

Given that

n = 17

P = 1/4

Using binomial

Mean = np

Mean = 17 × (1/4)

= 17 × .25

= 4.25

Approximately = 4.3