week3quizjune2010res342

week3quizjune2010res342 - ≥ 6.6 D) > 7.6 E) ≠ 7.6 3....

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RES342 WEEK THREE – QUIZ DUE ON DAY 7 OF WEEK THREE -- SEVEN QUESTIONS WITH EQUAL WEIGHT The mean weight of newborn infants at a community hospital is 6.6 pounds. A sample of seven infants is randomly selected and their weights at birth are recorded as 9.0, 7.3, 6.0, 8.8, 6.8, 8.4, and 6.6 pounds. 1. a 2. b 3. c 4. d 5. b 6. c 7. a 1. The null hypothesis is A) μ = 6.6 B) 6.6 C) 6.6 D) > 7.6 E) 7.6 2. What is the alternate hypothesis? A) = 6.6 B) 6.6 C)
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Unformatted text preview: ≥ 6.6 D) > 7.6 E) ≠ 7.6 3. What is the degrees of freedom? A) 7 B) 8 C) 6 D) 6.6 E) 7.6 4. If α = 0.05, what is the critical t value? A) – 2.365 B) ± 1.96 C) ± 2.365 D) ± 2.447 E) – 2.447 5. What is the sample mean? A) 6.6 B) 7.6 C) 1.177 D) 2.447 6. What is the sample variance? A) 1.177 B) 6.6 C) 1.385 D) 7.6 7. What is the sample standard deviation? A) 1.177 B) 6.6 C) 1.385 D) 7.6...
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This note was uploaded on 06/27/2010 for the course ACC 12 taught by Professor John during the Spring '10 term at PNCA.

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week3quizjune2010res342 - ≥ 6.6 D) > 7.6 E) ≠ 7.6 3....

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