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Statistics For Business And Economics 12th Edition By James T. McClave – Test Bank

Original price was: $55.00.Current price is: $45.00.

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Statistics For Business & Economics, Revised, 13th Edition By David R. Anderson – Test Bank

Multiple Choice

1. The symbol used for the variance of the population is
a. σ.
b. σ2.
c. s.
d. s2.
ANSWER: b
POINTS: 1
DIFFICULTY: Easy
LEARNING OBJECTIVES: BSST.ASWC.17.11.01 – Inferences About a Population Variance
NATIONAL STANDARDS: United States – BUSPROG: Analytic
STATE STANDARDS: United States – AK – DISC: Statistical Inference
KEYWORDS: Bloom’s: Remember

2. The symbol used for the variance of the sample is
a. σ.
b. σ2.
c. s.
d. s2.
ANSWER: d
POINTS: 1
DIFFICULTY: Easy
LEARNING OBJECTIVES: BSST.ASWC.17.11.01 – Inferences About a Population Variance
NATIONAL STANDARDS: United States – BUSPROG: Analytic
STATE STANDARDS: United States – AK – DISC: Statistical Inference
KEYWORDS: Bloom’s: Remember

3. The sampling distribution used when making inferences about a single population’s variance is
a. an F distribution.
b. a t distribution.
c. a chi-square distribution.
d. a normal distribution.
ANSWER: c
POINTS: 1
DIFFICULTY: Easy
LEARNING OBJECTIVES: BSST.ASWC.17.11.01 – Inferences About a Population Variance
NATIONAL STANDARDS: United States – BUSPROG: Analytic
STATE STANDARDS: United States – AK – DISC: Statistical Inference
KEYWORDS: Bloom’s: Remember

4. Which of the following has a chi-square distribution?
a. (n – 1)σ2/s2.
b. (n – 1)σ/s.
c. (n – 1)s/σ.
d. (n – 1)s2/σ2.
ANSWER: d
POINTS: 1
DIFFICULTY: Easy
LEARNING OBJECTIVES: BSST.ASWC.17.11.01 – Inferences About a Population Variance
NATIONAL STANDARDS: United States – BUSPROG: Analytic
STATE STANDARDS: United States – AK – DISC: Statistical Inference
KEYWORDS: Bloom’s: Remember

5. A sample of 51 elements is selected to estimate a 95% confidence interval for the variance of the population. The chi-square values to be used for this interval estimation are
a. 27.99 and 79.49.
b. 32.357 and 71.420.
c. 34.764 and 67.505.
d. 12.8786 and 46.9630.
ANSWER: b
POINTS: 1
DIFFICULTY: Easy
LEARNING OBJECTIVES: BSST.ASWC.17.11.01 – Inferences About a Population Variance
NATIONAL STANDARDS: United States – BUSPROG: Analytic
STATE STANDARDS: United States – AK – DISC: Interval Estimation
KEYWORDS: Bloom’s: Apply

6. We are interested in testing whether the variance of a population is significantly less than 1.44. The null hypothesis for this test is
a. H0: σ2 < 1.44.
b. H0: s2 ≥ 1.44.
c. H0: σ < 1.20.
d. H0: σ2 ≥ 1.44.
ANSWER: d
POINTS: 1
DIFFICULTY: Easy
LEARNING OBJECTIVES: BSST.ASWC.17.11.01 – Inferences About a Population Variance
NATIONAL STANDARDS: United States – BUSPROG: Analytic
STATE STANDARDS: United States – AK – DISC: Hypothesis Testing
KEYWORDS: Bloom’s: Understand

7. A sample of 41 observations yielded a sample standard deviation of 5. If we want to test H0: σ2 = 20, the test statistic is
a. 100.75.
b. 10.
c. 51.25.
d. 50.
ANSWER: d
POINTS: 1
DIFFICULTY: Easy
LEARNING OBJECTIVES: BSST.ASWC.17.11.01 – Inferences About a Population Variance
NATIONAL STANDARDS: United States – BUSPROG: Analytic
STATE STANDARDS: United States – AK – DISC: Hypothesis Testing
KEYWORDS: Bloom’s: Apply

8. A sample of 21 observations yielded a sample variance of 16. If we want to test H0: σ2 = 16, the test statistic is
a. 20.
b. 21.
c. 5.
d. 50.
ANSWER: a
POINTS: 1
DIFFICULTY: Easy
LEARNING OBJECTIVES: BSST.ASWC.17.11.01 – Inferences About a Population Variance
NATIONAL STANDARDS: United States – BUSPROG: Analytic
STATE STANDARDS: United States – AK – DISC: Hypothesis Testing
KEYWORDS: Bloom’s: Apply

9. Which of the following has an F distribution?
a. (n – 1)s/σ.
b. s1/s2.
c. (n – 1)s1/s2.
d. .
ANSWER: d
POINTS: 1
DIFFICULTY: Easy
LEARNING OBJECTIVES: BSST.ASWC.17.11.02 – Inferences About Two Population Variances
NATIONAL STANDARDS: United States – BUSPROG: Analytic
STATE STANDARDS: United States – AK – DISC: Statistical Inference
KEYWORDS: Bloom’s: Remember

10. The value of F.05 with 8 numerator and 19 denominator degrees of freedom is
a. 2.48.
b. 2.58.
c. 3.63.
d. 2.96.
ANSWER: a
POINTS: 1
DIFFICULTY: Easy
LEARNING OBJECTIVES: BSST.ASWC.17.11.02 – Inferences About Two Population Variances
NATIONAL STANDARDS: United States – BUSPROG: Analytic
STATE STANDARDS: United States – AK – DISC: Statistical Inference
KEYWORDS: Bloom’s: Apply

 

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