Question 1

Which of the following is not true about the standard error of a statistic?

Accepted Answer

A)  The standard error measures, roughly, the average difference between the statistic and the population parameter. 
B)  The standard error is the estimated standard deviation of the sampling distribution for the statistic. 
C)  The standard error can never be a negative number. 
D)  The standard error increases as the sample size(s) increases. 
A)  The standard error measures, roughly, the average difference between the statistic and the population parameter. 
B)  The standard error is the estimated standard deviation of the sampling distribution for the statistic. 
C)  The standard error can never be a negative number. 
D)  The standard error increases as the sample size(s) increases.

Question 2

Use the following information for questions:
 A Statistics instructor asked a random sample of female and male students how many hours they exercise each week. Minitab output for a comparison of females and males is shown below.  
-What is the correct notation for the parameter that is estimated by the confidence interval (95% CI) given in the output?

Accepted Answer

A)  p 
B)  p1 -p2 
C)  $\mu$ 
D)  $\mu$1 -$\mu$2 
A)  p 
B)  p1 -p2 
C)  $\mu$ 
D)  $\mu$1 -$\mu$2

Question 3

Which of the following statements is most correct about a confidence interval for a mean?

Accepted Answer

A)  It provides a range of values, any of which is a good guess at the possible value of the sample mean. 
B)  It provides a range of values, any of which is a good guess at the possible value of the population mean. 
C)  It provides a good guess for the range of values the sample mean is likely to have in repeated samples. 
D)  It provides a good guess for the range of values the population mean is likely to have in repeated samples. 
A)  It provides a range of values, any of which is a good guess at the possible value of the sample mean. 
B)  It provides a range of values, any of which is a good guess at the possible value of the population mean. 
C)  It provides a good guess for the range of values the sample mean is likely to have in repeated samples. 
D)  It provides a good guess for the range of values the population mean is likely to have in repeated samples.

Which of the following is not true about the standard error of a statistic?

Which of the following statements is most correct about a confidence interval for a mean?

Statistics Success Stories and Cautionary Tales

Turning Data Into Information

Relationships Between Quantitative Variables

Relationships Between Categorical Variables

Sampling: Surveys and How to Ask Questions

Gathering Useful Data for Examining Relationships

Probability

Random Variables

Understanding Sampling Distributions: Statistics As Random Variables

Estimating Proportions With Confidence

Testing Hypotheses About Proportions

Testing Hypotheses About Means

Inference About Simple Regression

More About Inference for Categorical Variables

Analysis of Variance

Turning Information Into Wisdom

Filters

Exam 11: Estimating Means With Confidence

Which of the following is not true about the standard error of a statistic?

Which of the following statements is most correct about a confidence interval for a mean?

Statistics Success Stories and Cautionary Tales

Turning Data Into Information

Relationships Between Quantitative Variables

Relationships Between Categorical Variables

Sampling: Surveys and How to Ask Questions

Gathering Useful Data for Examining Relationships

Probability

Random Variables

Understanding Sampling Distributions: Statistics As Random Variables

Estimating Proportions With Confidence

Testing Hypotheses About Proportions

Testing Hypotheses About Means

Inference About Simple Regression

More About Inference for Categorical Variables

Analysis of Variance

Turning Information Into Wisdom

Filters