A biased coin is red on one side and black on tbe other. The probability of throwing red is 0.78. In 10 throws of the coin, find the probability that: I exactly three blacks are thrown II the number of reds thrown is more than three but fewer than seven.

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A biased coin is red on one side and black on tbe other. The probability of throwing red is 0.78. In 10 throws of the coin, find the probability that:

I exactly three blacks are thrown

II the number of reds thrown is more than three but fewer than seven.

Let A represent the event "fewer than three blacks are thrown" and B "more than seven blacks are thrown".

Find the probabilities P(A), P(B), P(A|B).

 

 

 

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how did you get P(x=4) in part ii?

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