MathematicsEasyHigh School (11–12)Statistics and Probability › Random Variables and Probability DistributionsAPA-LevelIB
Created by StemPy LabA quiz has questions, each with three options, and exactly one option is right. A student guesses every answer independently. What is the probability that exactly answers are right?
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← A ticket for a prize draw costs 12 rupees. The organiser has 10 tickets in a box. One of them wins 50 rupees, two win 20 rupees each, and the other seven win nothing. A player buys one ticket from the box at random. What is the expected net gain of the player, in rupees?A binomial random variable has mean 8 and variance 4.8. Which pair of values of n and p fits? →
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