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BUSINESS STATISTICS AND ANALYTICS IN PRACTICE BOWERMAN PRACTICE QUESTIONS AND DETAILED SOLUTIONS

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BUSINESS STATISTICS AND ANALYTICS IN PRACTICE BOWERMAN PRACTICE QUESTIONS AND DETAILED SOLUTIONS

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BUSINESS STATISTICS AND ANALYTICS IN
PRACTICE BOWERMAN PRACTICE QUESTIONS
AND DETAILED SOLUTIONS


◉ A 95% confidence interval for the population mean is calculated
as [40, 80]. The margin of error for this interval is.
Answer: 20


◉ A 95% confidence interval for the population mean is calculated
as [40, 80]. The point estimate for μ is.
Answer: 60


◉ A 95% confidence interval for the population mean is constructed
as 6±2. What is the point estimate of μ?.
Answer: 6


◉ A 95% confidence interval for the population mean is constructed
as 6±2. What is the confidence coefficient?.
Answer: .95


◉ A 95% confidence interval for the population mean is constructed
as 6±2. What is the probability of error, α?.

, Answer: .05


◉ If samples of size n are drawn repeatedly from a given population
and each sample is used to construct a 95% confidence interval for
μ.
Answer: 5% of the confidence intervals will fail to contain μ.


◉ Regardless of the sample size, the estimator xx follows a normal
distribution when the underlying population follows a distribution..
Answer: Normal


◉ The confidence level equals.
Answer: 1-a


◉ In order to construct a confidence interval for μ, the sampling
distribution of the estimator xx must follow or approximately follow
a(n) ______ distribution.
Answer: Normal


◉ True or False: A confidence interval is constructed around the
population mean and makes inference about the sample mean..
Answer:

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