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Question Not yet answered Marked out of 1 P Flag question It is known from past experience that the probability that a randomly picked student will have a Facebook account is 0.87, and the probability that a randomly picked student will have a Twitter account is 0.42. If it is known that approximately 90% of all students have either a Facebook or Twitter account, what is the probability that a randomly picked student will have both a Facebook account and a Twitter account? State your answer to two decimal places Question 4 Not yet answered Marked out of 1 P Flag question Students have two quizzes that they must take in their undergraduate studies unit. The probability of getting a perfect score on the first quiz is 68%, the probability of getting a perfect score on the second quiz is 74%, and the probability of falling short of a perfect score on both quizzes is 19%. What is the probability of scoring a perfect score on both quizzes? State your answer in percentage terms, to one decimal place Answer: Question5 Not vet answered Marked out of 1 P Flag question Refer to the probabilities described in Question 4. If a student has achieved a perfect score on the first quiz, what is the conditional probability of getting a perfect score on the second quiz? State your answer in percentage terms, to one decimal place

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