Question 1

According to the Central Limit Theorem, as the number of samples increases, the distribution will approach the normal distribution.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following statistics comparing a sample mean to a population mean is most likely to be significant if you used a two-tailed test?

Accepted Answer

A)  t = 10.6 
B)  t = 0.9 
C)  t = -10.6 
D)  both a and c 
A)  t = 10.6 
B)  t = 0.9 
C)  t = -10.6 
D)  both a and c

Question 3

When we are using a two-tailed hypothesis test, the alternative hypothesis is of the form

Accepted Answer

A)  H 1 : µ ≠ 50. 
B)  H 1 : µ 
C)  H 1 : µ > 50. 
D)  H 0 : µ = 50. 
A)  H 1 : µ ≠ 50. 
B)  H 1 : µ 
C)  H 1 : µ > 50. 
D)  H 0 : µ = 50.

Question 4

The confidence intervals for two separate samples would be expected to differ because

Accepted Answer

A)  the sample means differ. 
B)  the sample standard deviations differ. 
C)  the sample sizes differ. 
D)  all of the above 
A)  the sample means differ. 
B)  the sample standard deviations differ. 
C)  the sample sizes differ. 
D)  all of the above

Question 5

If the population from which we draw samples is "rectangular," then the sampling distribution of the mean will be

Accepted Answer

A)  rectangular. 
B)  normal. 
C)  bimodal. 
D)  more normal than the population. 
A)  rectangular. 
B)  normal. 
C)  bimodal. 
D)  more normal than the population.

Question 6

In using a z test for testing a sample mean against a hypothesized population mean, the formula for z is

Accepted Answer

A)    
B)    
C)    
D)  none of the above 
A)    
B)    
C)    
D)  none of the above

Question 7

The standard error of the mean is

Accepted Answer

A)  equal to the standard deviation of the population. 
B)  larger than the standard deviation of the population. 
C)  the standard deviation of the sampling distribution of the mean. 
D)  none of the above 
A)  equal to the standard deviation of the population. 
B)  larger than the standard deviation of the population. 
C)  the standard deviation of the sampling distribution of the mean. 
D)  none of the above

According to the Central Limit Theorem, as the number of samples increases, the distribution will approach the normal distribution.

Which of the following statistics comparing a sample mean to a population mean is most likely to be significant if you used a two-tailed test?

When we are using a two-tailed hypothesis test, the alternative hypothesis is of the form

The confidence intervals for two separate samples would be expected to differ because

If the population from which we draw samples is "rectangular," then the sampling distribution of the mean will be

In using a z test for testing a sample mean against a hypothesized population mean, the formula for z is

The standard error of the mean is

Introduction

Basic Concepts

Displaying Data

Measures of Central Tendency

Measures of Variability

The Normal Distribution

Basic Concepts of Probability

Sampling Distributions and Hypothesis Testing

Correlation

Regression

Multiple Regression

Hypothesis Tests Applied to Means: Two Related Samples

Hypothesis Tests Applied to Means: Two Independent Samples

Power

One-Way Analysis of Variance

Factorial Analysis of Variance

Repeated-Measures Analysis of Variance

Chi-Square

Nonparametric and Resampling Statistical Tests

Meta-Analysis

Filters

Exam 12: Hypothesis Tests Applied to Means: One Sample

According to the Central Limit Theorem, as the number of samples increases, the distribution will approach the normal distribution.

Which of the following statistics comparing a sample mean to a population mean is most likely to be significant if you used a two-tailed test?

When we are using a two-tailed hypothesis test, the alternative hypothesis is of the form

The confidence intervals for two separate samples would be expected to differ because

If the population from which we draw samples is "rectangular," then the sampling distribution of the mean will be

In using a z test for testing a sample mean against a hypothesized population mean, the formula for z is

The standard error of the mean is

Introduction

Basic Concepts

Displaying Data

Measures of Central Tendency

Measures of Variability

The Normal Distribution

Basic Concepts of Probability

Sampling Distributions and Hypothesis Testing

Correlation

Regression

Multiple Regression

Hypothesis Tests Applied to Means: Two Related Samples

Hypothesis Tests Applied to Means: Two Independent Samples

Power

One-Way Analysis of Variance

Factorial Analysis of Variance

Repeated-Measures Analysis of Variance

Chi-Square

Nonparametric and Resampling Statistical Tests

Meta-Analysis

Filters