Doc 4

.docx

School

University of Maryland, College Park *

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400

Subject

Statistics

Date

Jan 9, 2024

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docx

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Uploaded by BaronCoyoteMaster995

Answer questions 6 — 9 based on the following: A random sample of 100 people was taken. Eighty-five of the people in the sample favored Candidate A. We are interested in determining whether or not the proportion of the population in favor of Candidate A is significantly more than 80%. Use a = 0.05. 6. The test statistic is a. 0.80 b. 0.05 c. 125 d. 2.00 The p-value is a. 02112 b. 0.05 c. 0.025 d. 0.1056 ‘What is your conclusion? a. fail to reject the null hypothesis at the 5% level b. reject the null hypothesis at the 5% level c. fail to reject the null hypothesis at the 2.5% level d. reject the null hypothesis at the 2.5% level The following is the frequency distribution for the speeds of a sample of automobiles traveling on an interstate highway. Speed Miles per Hour Frequency 50-54 2 55-59 4 60 - 64 5 65 - 69 10 70-74 9 75-79 5 The mean is a. 35 b. 670 c. 10 d. 67

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