Statistics: Informed Decisions Using Data - 5 Edition - Chapter 6.3 - Problem 18
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# ?Police Dispatch Officer Thompson of the Bay Ridge Police Department works the graveyard shift. He averages 4.5 calls per shift from his dispatcher. As

Statistics: Informed Decisions Using Data | 5th Edition

Problem 18

Police Dispatch Officer Thompson of the Bay Ridge Police Department works the graveyard shift. He averages 4.5 calls per shift from his dispatcher. Assume the number of calls follows a Poisson distribution. Would it be unusual for Officer Thompson to get fewer than 2 calls in a shift?

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Step 1 of 5) Police Dispatch Officer Thompson of the Bay Ridge Police Department works the graveyard shift. He averages 4.5 calls per shift from his dispatcher. Assume the number of calls follows a Poisson distribution. Would it be unusual for Officer Thompson to get fewer than 2 calls in a shift 4UFQ Professor Neill wants to know if the reaction time in the dominant hand is less than the reaction time in the nondominant hand. We express this as md 6 0. We have H0: md = 0 second versus H1: md 6 0 second This test is left-tailed. 4UFQ The level of significance is a = 0.05. Classical Approach 4UFQ The sample mean is d = -0.0132 second and the sample standard deviation is sd = 0.0164 second. The test statistic is t0 = d0 sd 1n = -0.0132 0.0164 112 = -2.788 Because this is a left-tailed test,

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