Assume that random guesses are made for seven multiple choice questions on an sat test, so that there are equals 7 trials, each with probability of success (correct) given by pequals0.5. find the indicated probability for the number of correct answers. find the probability that the number x of correct answers is fewer than 4.

0.5

Step-by-step explanation:

Formula for binomial probability :-

, where P(x) is the probability of getting success in x trials , n is the total number of trials and p is the probability of getting success in each trial.

Given : The number of trails : n=7

The probability of success for each trial : p=0.5

Now, the probability that the number x of correct answers is fewer than 4 will be :-

Hence, the probability that the number x of correct answers is fewer than 4 = 0.5

the answer is b.)

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