Student Solutions Manual for Devore's Probability and Statistics for Engineering and the Sciences, 9th
Student Solutions Manual for Devore's Probability and Statistics for Engineering and the Sciences, 9th
9th Edition
ISBN: 9798214004020
Author: Jay L. Devore
Publisher: Cengage Learning US
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Chapter 7.2, Problem 26E

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 large-sample CI for μ. [Hint: The mean and variance of a Poisson variable both equal μ, so

Z = X ¯ μ μ / n

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 − α) and solving the resulting inequalities for μ — see the argument just after (7.10).]

Number of absences 0 1 2 3 4 5 6 7 8 9 10
Frequency 1 4 8 10 8 7 5 3 2 1 1
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Chapter 7 Solutions

Student Solutions Manual for Devore's Probability and Statistics for Engineering and the Sciences, 9th

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