ID: 18383Nhận biết (M1) a) A bag contains 4 red balls and 6 blue balls. Juliette selects two balls at random, without replacement, from the bag. The number of red balls selected by Juliette is denoted by . Find the probability mass function (PMF) of .
b) Juliette also tosses two coins. One coin is biased so that the probability of a head is . The other coin is biased so that the probability of a head is . Let be the number of heads obtained by Juliette. Find the probability .
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Nhận biết (M1)
a) A bag contains 4 red balls and 6 blue balls. Juliette selects two balls at random, without replacement, from the bag. The number of red balls selected by Juliette is denoted by . Find the probability mass function (PMF) of .
b) Juliette also tosses two coins. One coin is biased so that the probability of a head is . The other coin is biased so that the probability of a head is . Let be the number of heads obtained by Juliette. Find the probability .
Đáp án đúng:
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