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F1 - King Fahd University of Petroleum and Minerals

F1 - King Fahd University of Petroleum and Minerals

STAT 212 Business

STAT 212 Business Statistics II 10 Part 7. MULTIPLE CHOICE QUESTIONS (30 = 2 points each). Record (by circling) your answers in the following table. 1 A B C D E 2 A B C D E 3 A B C D E 4 A B C D E 5 A B C D E 6 A B C D E 7 A B C D E 8 A B C D E 9 A B C D E 10 A B C D E 11 A B C D E 12 A B C D E 13 A B C D E 14 A B C D E 15 A B C D E

STAT 212 Business Statistics II 11 1. When performing a chi-square hypothesis test, what happens if the assumption is violated? a. The value of the test statistic will be underestimated b. The null hypothesis will be more likely to be rejected than it should be c. The degrees of freedom are reduced d. a & b e. None of the above 2. The expected frequency in a chi-square contingency table cell can be calculated from the expected proportion for that cell by multiplying by which of the following? a. that column’s total b. that row’s total c. the total sample size d. 1, simply e. None of the above 2 2 2 2 3. If you were given n 1 = 15, n 2 = 12, and a = 0.1, to test H 0 : σ1 = σ 2 against H0 : σ1 > σ 2 , then the test statistic will be compared with which of the following critical value? a. F 0.05;14,11 b. F 0.1;14,11 c. F 0.05;11,14 d. F 0.1;11,14 e. None of the above 4. If α is increased then: a. The probability of rejecting H o when it is true will be decreased b. The probability of accepting H A when it is false will be decreased c. The observed significance level will be increased d. The assumed significance level will be decreased e. None of the above 5. In a simple linear regression problem, the following sum of squares are produced: 2 2 ∑ ( y i − y) = 200, ∑ ( y − ˆ i y i ) = 50 , and 2 ∑ ( yˆ i − y) = 150 . What is the percentage of Y variation that is explained by x variation? a. 25% b. 33% c. 50% d. 75% e. 150%

Annual Report 2010 - Research Institute - King Fahd University of ...
F1 - King Fahd University of Petroleum and Minerals
F1 - King Fahd University of Petroleum and Minerals
F1 - King Fahd University of Petroleum and Minerals
F1 - King Fahd University of Petroleum and Minerals
F1 - King Fahd University of Petroleum and Minerals
E3 - King Fahd University of Petroleum and Minerals
F1 - King Fahd University of Petroleum & Minerals
F1 - King Fahd University of Petroleum and Minerals
E2 - King Fahd University of Petroleum and Minerals
F1 - King Fahd University of Petroleum & Minerals
F1 - King Fahd University of Petroleum and Minerals
F1 - King Fahd University of Petroleum & Minerals
F1 - King Fahd University of Petroleum and Minerals
F1 - King Fahd University of Petroleum and Minerals
F1 - King Fahd University of Petroleum and Minerals
F1 - King Fahd University of Petroleum & Minerals
F2 - King Fahd University of Petroleum and Minerals
e - King Fahd University of Petroleum and Minerals
E1 - King Fahd University of Petroleum and Minerals
Answer - King Fahd University of Petroleum and Minerals
king fahd university of petroleum & minerals dept of mathematical ...
E1 - King Fahd University of Petroleum and Minerals
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Q3 - King Fahd University of Petroleum and Minerals
S1 - King Fahd University of Petroleum and Minerals
E1 - King Fahd University of Petroleum and Minerals
King Fahd University of Petroleum and Minerals
Laboratory Manual - King Fahd University of Petroleum and Minerals
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