Question 1

It is impossible to prove something in statistics because ______.

Accepted Answer

A)  statistics don't really tell us anything 
B)  statistics are inherently probabilistic 
C)  statistics are frequently misinterpreted 
D)  none of these 
A)  statistics don't really tell us anything 
B)  statistics are inherently probabilistic 
C)  statistics are frequently misinterpreted 
D)  none of these

Question 2

A two-tailed test always ______.

Accepted Answer

A)  is non-directional 
B)  uses ≠ in the alternative hypothesis 
C)  both a and b 
D)  none of these 
A)  is non-directional 
B)  uses ≠ in the alternative hypothesis 
C)  both a and b 
D)  none of these

Question 3

What is the following? H0

Accepted Answer

A)  null hypothesis 
B)  alternative hypothesis 
C)  nil hypothesis 
D)  none of these 
A)  null hypothesis 
B)  alternative hypothesis 
C)  nil hypothesis 
D)  none of these

Question 4

The first step of the hypothesis testing process is ______.

Accepted Answer

A)  state the hypotheses 
B)  conduct the statistical test 
C)  state the research question 
D)  derive a decision rule 
A)  state the hypotheses 
B)  conduct the statistical test 
C)  state the research question 
D)  derive a decision rule

Question 5

When we reject the null hypothesis we ______.

Accepted Answer

A)  conclude that we have found statistical significance 
B)  conclude that the null hypothesis is improbable 
C)  both a and b 
D)  none of these 
A)  conclude that we have found statistical significance 
B)  conclude that the null hypothesis is improbable 
C)  both a and b 
D)  none of these

Question 6

If the null contains ≤, the alternative must contain the ≥.

Accepted Answer

A) True 
 B)False

Question 7

When testing a hypothesis about µ, you will most likely compare a ______ to a hypothetical test value.

Accepted Answer

A)  µ 
B)  x̄ 
C)  F1F1F1S1F1F1F10 
D)  X 
A)  µ 
B)  x̄ 
C)  F1F1F1S1F1F1F10 
D)  X

Question 8

If your research question states "Did those that were trained have higher job performance than those who were not trained?", your alternative hypothesis is likely to contain >.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following could appear in a null hypothesis?

Accepted Answer

A) = B) > C) < D) none of these A) = B) > C) < D) none of these

Question 10

When we retain the null hypothesis we conclude ______.

Accepted Answer

A)  the null hypothesis, although unlikely, is plausible 
B)  the alternative hypothesis is more probable than the null hypothesis 
C)  the null hypothesis is more plausible than the alternative hypothesis 
D)  we do not have enough evidence to reject the alternative 
A)  the null hypothesis, although unlikely, is plausible 
B)  the alternative hypothesis is more probable than the null hypothesis 
C)  the null hypothesis is more plausible than the alternative hypothesis 
D)  we do not have enough evidence to reject the alternative

Question 11

To minimize Type II error, you can ______.

Accepted Answer

A)  decrease F1F1F1S1F1F1F10 
B)  increase n 
C)  decrease p 
D)  increase µ 
A)  decrease F1F1F1S1F1F1F10 
B)  increase n 
C)  decrease p 
D)  increase µ

Question 12

The most common significance level is ______.

Accepted Answer

A)  1% 
B)  5% 
C)  10% 
D)  99% 
A)  1% 
B)  5% 
C)  10% 
D)  99%

Question 13

A researcher that rejects the null when they should have retained the null has committed a Type I error.

Accepted Answer

A) True 
 B)False

It is impossible to prove something in statistics because ______.

A two-tailed test always ______.

What is the following? H₀

The first step of the hypothesis testing process is ______.

When we reject the null hypothesis we ______.

If the null contains ≤, the alternative must contain the ≥.

When testing a hypothesis about µ, you will most likely compare a ______ to a hypothetical test value.

If your research question states "Did those that were trained have higher job performance than those who were not trained?", your alternative hypothesis is likely to contain >.

Which of the following could appear in a null hypothesis?

When we retain the null hypothesis we conclude ______.

To minimize Type II error, you can ______.

The most common significance level is ______.

A researcher that rejects the null when they should have retained the null has committed a Type I error.

The Language of Statistics

Working With Numbers and Data Display

Central Tendency and Variability

Probability Distributions

Sampling Distributions

Estimation and Confidence Intervals

Tests for Significance: Z-Tests and One-Sample T-Tests

Tests for Significance: Paired and Independent-Samples T-Test

Analysis of Variance Anova

CHI-Squared Tests of Fit

Correlation R and Regression Y BX A

Matching Statistical Tests to Business Problems

Filters

Exam 7: Hypothesis Testing

It is impossible to prove something in statistics because ______.

A two-tailed test always ______.

What is the following? H0

The first step of the hypothesis testing process is ______.

When we reject the null hypothesis we ______.

If the null contains ≤, the alternative must contain the ≥.

When testing a hypothesis about µ, you will most likely compare a ______ to a hypothetical test value.

If your research question states "Did those that were trained have higher job performance than those who were not trained?", your alternative hypothesis is likely to contain >.

Which of the following could appear in a null hypothesis?

When we retain the null hypothesis we conclude ______.

To minimize Type II error, you can ______.

The most common significance level is ______.

A researcher that rejects the null when they should have retained the null has committed a Type I error.

The Language of Statistics

Working With Numbers and Data Display

Central Tendency and Variability

Probability Distributions

Sampling Distributions

Estimation and Confidence Intervals

Tests for Significance: Z-Tests and One-Sample T-Tests

Tests for Significance: Paired and Independent-Samples T-Test

Analysis of Variance Anova

CHI-Squared Tests of Fit

Correlation R and Regression Y BX A

Matching Statistical Tests to Business Problems

Filters

What is the following? H₀