kuusora310
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- Jun 27, 2016
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Hi! I really don't know how to get the answer to this question:
An urn contains 9 balls numbered 1 to 9. A ball is drawn with replacement an indefinite number of times. The number appearing on each draw is noted down in a sequence. What is the length of the shortest sequence such that the probability of getting at least one 5 is at least 80%?
Can someone help me I'm desperate :?:?:?
An urn contains 9 balls numbered 1 to 9. A ball is drawn with replacement an indefinite number of times. The number appearing on each draw is noted down in a sequence. What is the length of the shortest sequence such that the probability of getting at least one 5 is at least 80%?
Can someone help me I'm desperate :?:?:?