Elementary Statistics
12th Edition
ISBN: 9780321836960
Author: Mario F. Triola
Publisher: PEARSON
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Chapter 11.2, Problem 15BSC
In Exercises 5-20, conduct the hypothesis test and provide the test statistic, critical value, and/or P-value, and state the conclusion.
11. Police Calls The police department in Madison, Connecticut, released the following numbers of calls for the different days of the week during a February that had 28 days: Monday (114); Tuesday (152); Wednesday (160); Thursday (164); Friday (179); Saturday (196); Sunday (130). Use a 0.01 significance level to test the claim that the different days of the week have the same frequencies of police calls. Is there anything notable about the observed frequencies?
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A researcher wishes to estimate, with 90% confidence, the population proportion of adults who support labeling
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...
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(Round up to the nearest whole number as needed.)
The table available below shows the costs per mile (in cents) for a sample of automobiles. At a = 0.05, can you conclude that at least one mean
cost per mile is different from the others?
Click on the icon to view the data table.
Let Hss, HMS, HLS, Hsuv and Hмy represent the mean costs per mile for small sedans, medium sedans, large sedans, SUV 4WDs, and minivans
respectively. What are the hypotheses for this test?
OA. Ho: Not all the means are equal.
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C. Ho Hss HMS HLS HSUV =μMV
= =
H: Not all the means are equal.
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HLS HSUV HMV
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Chapter 11 Solutions
Elementary Statistics
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