Exam 11: Inferences About Population Variances

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The bottler of a certain soft drink claims their equipment to be accurate and that the variance of all filled bottles is at most .05.The null hypothesis in a test to confirm the claim would be written as

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Question 81

A sample of 14 items provides a sample mean of 20 and a sample variance of 18.Compute a 95% confidence interval estimate for the standard deviation of the population.

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Question 82

The contents of a sample of 26 cans of apple juice showed a standard deviation of .06 ounces.We are interested in testing whether the variance of the population is significantly more than .003.The p-value for this test is

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Question 83

Which of the following has an F distribution?

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Question 84

At α = .1, test to see if the population variances from which the following samples were drawn are equal. Sample 1 Sample 2 n₁ = 21 n₂ = 19 s₁ = 18 s₂ = 16

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Question 85

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The bottler of a certain soft drink claims their equipment to be accurate and that the variance of all filled bottles is at most .05.The null hypothesis in a test to confirm the claim would be written as

A sample of 14 items provides a sample mean of 20 and a sample variance of 18.Compute a 95% confidence interval estimate for the standard deviation of the population.

The contents of a sample of 26 cans of apple juice showed a standard deviation of .06 ounces.We are interested in testing whether the variance of the population is significantly more than .003.The p-value for this test is

Which of the following has an F distribution?

At α = .1, test to see if the population variances from which the following samples were drawn are equal. Sample 1 Sample 2 n₁ = 21 n₂ = 19 s₁ = 18 s₂ = 16

Data and Statistics

Descriptive Statistics: Tabular and Graphical Displays

Descriptive Statistics: Numerical Measures

Introduction to Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling and Sampling Distributions

Interval Estimation

Hypothesis Tests

Inference About Means and Proportions With Two Populations

Comparing Multiple Proportions, Tests of Independence and Goodness of Fit

Experimental Design and Analysis of Variance

Simple Linear Regression

Multiple Regression

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Exam 11: Inferences About Population Variances

The bottler of a certain soft drink claims their equipment to be accurate and that the variance of all filled bottles is at most .05.The null hypothesis in a test to confirm the claim would be written as

A sample of 14 items provides a sample mean of 20 and a sample variance of 18.Compute a 95% confidence interval estimate for the standard deviation of the population.

The contents of a sample of 26 cans of apple juice showed a standard deviation of .06 ounces.We are interested in testing whether the variance of the population is significantly more than .003.The p-value for this test is

Which of the following has an F distribution?

At α = .1, test to see if the population variances from which the following samples were drawn are equal. Sample 1 Sample 2 n1 = 21 n2 = 19 s1 = 18 s2 = 16

Data and Statistics

Descriptive Statistics: Tabular and Graphical Displays

Descriptive Statistics: Numerical Measures

Introduction to Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling and Sampling Distributions

Interval Estimation

Hypothesis Tests

Inference About Means and Proportions With Two Populations

Comparing Multiple Proportions, Tests of Independence and Goodness of Fit

Experimental Design and Analysis of Variance

Simple Linear Regression

Multiple Regression

Filters

At α = .1, test to see if the population variances from which the following samples were drawn are equal. Sample 1 Sample 2 n₁ = 21 n₂ = 19 s₁ = 18 s₂ = 16