Probability and Statistics

Mathematics
Tutor: None Selected Time limit: 1 Day

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? 

(Round answers to the third decimal place if needed)

Apr 13th, 2015

p(red marble) = 3/7

frequency = 100

Expected number of red marbles recorded = (3/7)(100) = 42.857

Apr 13th, 2015

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Apr 13th, 2015
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Apr 13th, 2015
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