4. I hope this is helpful.
Answer:
I would say (B) 14,55
Step-by-step explanation:
Step-by-step explanation:
consider k the numbe of correct answers
P(k) = kC8×(0,2)^k×(0,8)^(8-k)
example:
The probability of having 2 correct answers = 2C8×(0,2)^2×(0,8)^(6) = 0.294
the probability that the number x or correct answer is fewer than 4 =
p(0) + p(1) + p(2) + p(3) = 0.944
Answer:
11/20
Step-by-step explanation:
3/4 - 1/5 = 15/20 - 4/20 = 11/20