In a carton of 20 mushrooms, 4 of them are poisonous. If you take a sample of 15 mushrooms, what is the probability that exactly 3 of them will be poisonous?

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In a carton of 20 mushrooms, 4 of them are poisonous. If you take a sample...
In a carton of 20 mushrooms, 4 of th em are poisonous. If you take a sample of 15 mushrooms, what is the probability that exactly 3 of them will be poisonous?
Please answer 4 and 5?
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evolution hw please answer all questions
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Suppose you take a sample of size 4 from a population that is normally distributed with a known standard deviation of 10. You get a sample mean of 20. What is the probability the population mean is 30 or more? Question 4 options: 0.025 0.05 0.5 0.95 Either 0 or 1, but we don't know which. Question 5 (1 point) You want to estimate the proportion of Canadians who have read fewer than 2 books in the past year. You...
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Suppose you take a sample of size 4 from a population that is normally distributed with a known standard deviation of 10. You get a sample mean of 20. What is the probability the population mean is 30 or more? Question 4 options: 0.025 0.05 0.5 0.95 Either 0 or 1, but we don't know which.
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