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Probability and Statistics

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An urn contains 4 blue marbles and 3 red marbles. Miley Cyrus goes to the urn, randomly selects a marble, records the color, and then replaces the marble. She does this an additional 99 times (for a total of 100 recordings). What is the expected number of red marbles recorded?

Oct 20th, 2017


probability of red=3/7

no=3/7*100=42 red marbles

Apr 20th, 2015

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Oct 20th, 2017
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Oct 20th, 2017
Oct 21st, 2017
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