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Statistics for Data Science II, Quiz 1
Suppose that the number of people who visit a yoga academy each day is a Poisson random variable with mean 20. Suppose further that each person who visits is, independently, girl with probability 0.5 or boy with probability 0.5. Find the joint probability that exactly 8 boys and 12 girls visit the yoga academy on any particular day.
Suppose that the number of people who visit a yoga academy each day is a Poisson random variable with mean 20. Suppose further that each person who visits is, independently, girl with probability 0.5 or boy with probability 0.5. Find the joint probability that exactly 8 boys and 12 girls visit the yoga academy on any particular day. A producer of a certain type of electronic component ships to suppliers in lots of twenty. Suppose that 60% of all such lots contain no defective components, 30% contain one defective component, and 10% contain two defective components. A lot is picked, two components from the lot are randomly selected and tested, and neither is defective. What is the probability that two defectives exist in the lot? Figure from the original question paper