Assume that random guesses are made for 4 multiple-choice questions on a test with 5 choices for each question, so that there are nequals4 trials, each with probability of success (correct) given by p equals 0.20. find the probability of no correct answers.

There is a probability of no correct answers is 0.4096.

Step-by-step explanation:

Since we have given that

Number of trials = 4

Probability of success i.e. getting correct answer = 0.20

We need to find the probability of no correct answers.

We would use "Binomial distribution".

Let X be the number of correct answers.

So, it becomes,

Hence, there is a probability of no correct answers is 0.4096.

3-4

step-by-step explanation:

the answer is 3-4 because both 45 and 60 has a multiple of 15.

45/3=15

60/4=15

therefore the odds against selecting a red is 4-3

answer: 88

step-by-step explanation: