Probability Review

Find the probability that a woman is a widow given that she is 65 years old? Which rule?

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See the picture.

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All scores are equally likely. What is the prob. of getting a 3 or 4 on the next stats exam?

The prob. of success is 0.05. What is the prob. the first success comes on the 2nd trial?

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Find the probability that the die lands on a “6” no more than 5 times.

What is the prob. that the first success does not come before the 1st trial? (p=0.1)

Find the probability that the die lands on a “6” exactly 11 times after 18 rolls.