Chap8Stats

Chap8Stats - Review Assessment: Test Chapter 8 User...

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Review Assessment: Test Chapter 8 User Elizabeth S Knowles Submitted 4/20/08 9:47 PM Name Test Chapter 8 Status Completed Score 64 out of 80 points Time Elapsed 0 hours, 44 minutes, and 19 seconds out of 3 hours and 0 minutes allowed. Instructions Question 1 2 out of 2 points Express the null hypothesis H 0 and the alternative hypothesis H 1 in symbolic form. Use the correct symbol (μ, p, σ )for the indicated parameter. The owner of a football team claims that the average attendance at games is over 67,800, and he is therefore justified in moving the team to a city with a larger stadium. Selected Answer: H 0 : μ, the average attendance at games, is equal to 67,800 H 1 : μ, the average attendance at games, is greater than 67,800 Correct Answer: H 0 : μ, the average attendance at games, is equal to 67,800 H 1 : μ, the average attendance at games, is greater than 67,800 Question 2 2 out of 2 points Find the P-value for the indicated hypothesis test. A medical school claims that more than 28% of its students plan to go into general practice. It is found that among a random sample of 130 of the school's students, 32% of them plan to go into general practice. Find the P-value for a test of the school's claim. Selected Answer: 0.1539 Correct Answer: 0.1539 Question 3 0 out of 2 points Determine whether the given conditions justify testing a claim about a population mean μ. The sample size is n = 17, σ is not known, and the original population is normally distributed. Selected Answer: No Correct Answer: Yes Question 4 2 out of 2 points

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Formulate the indicated conclusion in nontechnical terms. Be sure to address the original claim. The owner of a football team claims that the average attendance at games is over 727, and he is therefore justified in moving the team to a city with a larger stadium. Assuming that a hypothesis test of the claim has been conducted and that the conclusion is failure to reject the null hypothesis, state the conclusion in nontechnical terms. Selected Answer: There is not sufficient evidence to support the claim that the mean attendance is greater than 727. Correct Answer: There is not sufficient evidence to support the claim that the mean attendance is greater than 727. Question 5 2 out of 2 points Determine whether the given conditions justify testing a claim about a population mean μ. The sample size is n = 25, σ = 5.93, and the original population is normally distributed. Selected Answer: Yes Correct Answer: Yes Question 6 2 out of 2 points Find the P-value for the indicated hypothesis test. A nationwide study of American homeowners revealed that 65% have one or more lawn mowers. A lawn equipment manufacturer, located in Omaha, feels the estimate is too low for households in Omaha. Find the for a test of the claim that the proportion with lawn mowers in Omaha is higher than 65%. Among 497 randomly selected homes in Omaha, 340 had one or more lawn mowers. Selected
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This note was uploaded on 05/27/2008 for the course MTH 157 taught by Professor Spence during the Spring '08 term at VCCS.

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Chap8Stats - Review Assessment: Test Chapter 8 User...

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