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Get Full Access to Probability And Statistics - 4 Edition - Chapter 9.2 - Problem 13
Get Full Access to Probability And Statistics - 4 Edition - Chapter 9.2 - Problem 13

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# Consider the series of examples in this section concerning

ISBN: 9780321500465 233

## Solution for problem 13 Chapter 9.2

Probability and Statistics | 4th Edition

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Problem 13

Consider the series of examples in this section concerning service times in a queue. Suppose that the manager observes two service times X1 and X2. It is easy to see that both f1(x) in (9.2.1) and f0(x) in (9.2.2) depend on the observed data only through the value t = x1 + x2 of the statistic T = X1 + X2. Hence, the tests from Theorems 9.2.1 and 9.2.2 both depend only on the value of T . a. Using Theorem 9.2

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UNIT 10 – Testing Hypothesis About Proportions Standardized Value (z-score, z*) – # of standard deviations an observation lies away from the mean Z = pp̂ – p = ( value – mean ) √ pq ÷ n standard deviation Hypothesis – statement about the population distribution parameter (ex: p), usually claims the parameter takes on a specific value Class Example: Study to see in bank executives are more likely to promote males than females, SRS of 48 execs were given fake resumes of 24 men & 24 women. 35 execs said they would hire the candidate; 21 male & 14 female. Is this difference evidence of discrimination Start with idea that no discrimination has occurred. If so, since males & females were equally represented in the

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##### ISBN: 9780321500465

The full step-by-step solution to problem: 13 from chapter: 9.2 was answered by , our top Statistics solution expert on 01/12/18, 02:58PM. Probability and Statistics was written by and is associated to the ISBN: 9780321500465. This full solution covers the following key subjects: . This expansive textbook survival guide covers 102 chapters, and 1615 solutions. This textbook survival guide was created for the textbook: Probability and Statistics, edition: 4. Since the solution to 13 from 9.2 chapter was answered, more than 218 students have viewed the full step-by-step answer. The answer to “Consider the series of examples in this section concerning service times in a queue. Suppose that the manager observes two service times X1 and X2. It is easy to see that both f1(x) in (9.2.1) and f0(x) in (9.2.2) depend on the observed data only through the value t = x1 + x2 of the statistic T = X1 + X2. Hence, the tests from Theorems 9.2.1 and 9.2.2 both depend only on the value of T . a. Using Theorem 9.2” is broken down into a number of easy to follow steps, and 82 words.

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