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categoryإحصاء schoolبكالوريوس event_available2026-07-14

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10. ‣ 0/2 points | Previous Answers My Notes Ask Your Teacher The superintendent of a large school district, having once had a course in probability and statistics, believes that the number of teachers absent on any given day has a Poisson distribution with parameter μ. Use the accompanying data on absences for 50 days to obtain a 95% large-sample CI for μ. Number of absences 0 1 2 3 4 5 6 7 8 9 10 Frequency 2 3 7 10 8 7 5 5 1 1 1 [Hint: The mean and variance of a Poisson variable both equal μ, so Z = X-μ Vuln - a) and has approximately a standard normal distribution. Now proceed as in the derivation of the interval for p by making a probability statement (with probability 1 - solving the resulting inequalities for u.] (Round your answers to two decimal places.) 4.04 X.4.20 Need Help? Read It Talk to a Tutor

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