4 . In a second grade class containing 15 girls and 9 boys 2 students are selected at random to give out the math papers . What is the probability
Could you please provide step-by-step explanation for the answers of the following questions.
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4 . In a second grade class containing 15 girls and 9 boys 2 students are selected at random togive out the math papers . What is the probability that the second student chosen is a boygiven that the first one was a girl ?AL $ 15 81 5 9 0 )D )B 238 2327Answer : B5 . In a large bag of marbles , 409 of them are red , A child chooses 4 marbles from this bag . Ifthe child chooses the marbles at random , what is the chance that the child gets exactly threered marblesA ) 0 . 154 8 ) 0 . 230 0 1 0 . 346 0 1 0 . 256Answer : A6 . Find the probability 10 36 5 2 5 1 43 using the standard normal distributionA l 0. 2831 8 07169 0 07831 D ) 0.5600Answer : A
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