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Assume that random gases are made for 10 multiple choice questions on an SAT test, so there is n = 10 trials, each with probability
Assume that random gases are made for 10 multiple choice questions on an SAT test, so there is n = 10 trials, each with probability of success gives by p = 0.2. That means each question has five choices with only one appropriate answer. Find indicated probability for the number of correct answers. Is this a binomial experiment? Why? Find the probability that the number of correct answers/guesses is exactly 6. Find the probability that the number of correct answers/guesses is at least 9. Is the outcome nine significantly high? Why? Find the probability that the number of correct answers/guesses is at most 1 (no more than 1). Is the outcome 1 significantly low? Why? Find the probability that the number correct answer/guesses is no correct answers (none). Find the mean and standard deviation of the random variable X (# of correct guesses) And interpret their meaning
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