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BSTAT2-2nd-Edition-By-Gerald-Keller-–-Test-Bank-700x700

BSTAT2 2nd Edition By Gerald Keller – Test Bank

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1Business and Management Essential Test Bank Research Method Tesxt Books

Original price was: $35.00.Current price is: $24.97.

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Exam Bank For BSTAT2 Second Edition By Gerald Keller

CHAPTER 11: INFERENCE ABOUT A POPULATION

TRUE/FALSE

1. In order to ascertain the significance of speculation testing regarding the population mean μ, knowledge of the test statistic value is crucial.

Answer: True | Category: Analytical; Hypothesis Testing

2. To understand the significance of speculation testing concerning the population mean μ, familiarity with the test statistic value is essential.

Answer: False | Category: Analytical; Hypothesis Testing

3. If a sample consists of 15 observations and necessitates a 95% confidence approximation for μ, the correct t-value is 1.753.

Answer: False | Category: Analytical; Hypothesis Testing

4. When a sample comprises 18 observations and requires a 90% confidence estimate for μ, the correct t-value is 1.740.

Answer: True | Category: Analytical; Hypothesis Testing

5. The statistic follows a Student t-distribution with n degrees of freedom when the sampled population is normal.

Answer: False | Category: Analytical; Hypothesis Testing

6. If the sampled population is non-normally distributed, the t-test for the population mean μ remains applicable unless the condition is extremely severe.

Answer: True | Category: Analytical; Hypothesis Testing

7. A racing driver conducted 20 tests for the time taken from 0 to 60 mph, yielding an average of 48.5 seconds with a standard deviation of 1.47 seconds. A 95% confidence interval for the 0 to 60 time ranges from 45.2 seconds to 51.8 seconds.

Answer: False | Category: Analytical; Hypothesis Testing

8. When establishing a 95% confidence interval for a population mean from a sample size of 20, the degrees of freedom from the t-distribution do not equal 20.

Answer: False | Category: Analytical; Hypothesis Testing

9. The t-distribution is employed in constructing a confidence interval for a mean when the exact standard error is unknown.

Answer: True | Category: Analytical; Hypothesis Testing

10. The t-distribution does not allow for the computation of confidence intervals for means in small samples when the population variance is unidentified, irrespective of the population distribution shape.

Answer: False | Category: Analytical; Hypothesis Testing

11. The t-distribution is utilized to formulate a confidence interval estimation for the population mean when the population standard deviation is undisclosed.

Answer: True | Category: Analytical; Hypothesis Testing

12. The t-distribution assumes a normal distribution within the population.

Answer: True | Category: Analytical; Hypothesis Testing

13. When estimating the population mean with an unknown population standard deviation and a sample size of 16, there are not 8 degrees of freedom.

Answer: False | Category: Analytical; Hypothesis Testing

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Original price was: $35.00.Current price is: $24.97.

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