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jordynnmarelich9519
29.07.2019 •
Mathematics
Aquiz consists of 10 multiple choice questions, each with five possible answers, one of which is correct. to pass the quiz a student must get 60% or better on the quiz. if a student randomly guesses, what is the probability that the student will pass the quiz
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Ответ:
This is binomial; there are a fixed number of trials (10), the events are independent (the chances of one occurring do not affect the chances of the other occurring), and there are two outcomes (either right or wrong).
He must get 6 of the 10 questions correct, so k is 6 and n is 10. The probability of getting a question correct is 1/5=0.2; the probability of getting a question incorrect is 4/5=0.8.
Ответ:
Q: What is the unknown information that could be found using the Pythagorean theorem?
A: The hypotenuse, or the length of the ladder.
Q: what is the approximate length of the ladder needed, rounding to the nearest hundredth?
A: 12.37 ft.