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STA 110-A device that detects the presence of radon gas

01 / 10 / 2021 Projects

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STA 110-A device that detects the presence of radon gas

A device that detects the presence of radon gas in a home counts the number of alpha particles that hit its detector over a defined period. In a particular home, the number of alpha particles detected per week averages 3 over a long period of time. Let X represent the number of alpha particles that will be detected next week.a) Suggest a suitable probability model for the random variable X. Justify your answer and identify any assumptions you are making.b) State the mean, variance and standard deviation of your model.c) What is the probability that 5 alpha particles will be detected next week?d) What is the probability that 12 alpha particles will be detected over the next three weeks?



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