Question 1

We might report p = .02 when reporting the significance by hand, but we would be more likely to report p < .05 when reporting the significance using a computer.

Accepted Answer

A) True 
 B)False

Question 2

When alpha decreases ______.

Accepted Answer

A)  the probability of a Type I error increases 
B)  the probability of a Type I error decreases 
C)  the probability of a Type II error increases 
D)  the probability of a Type I error decreases. 
A)  the probability of a Type I error increases 
B)  the probability of a Type I error decreases 
C)  the probability of a Type II error increases 
D)  the probability of a Type I error decreases.

Question 3

If F1F1F1S1F1F1F10 = .05 and p = .02 ______.

Accepted Answer

A)  you should reject the null 
B)  you have found statistical significance 
C)  it is unlikely that your result is due to chance alone 
D)  all of these 
A)  you should reject the null 
B)  you have found statistical significance 
C)  it is unlikely that your result is due to chance alone 
D)  all of these

Question 4

"Are our sales numbers the same from year to year?" is a valid research question.

Accepted Answer

A) True 
 B)False

Question 5

How would your pronounce the following? H1: µ ≠ 8

Accepted Answer

A)  the null hypothesis is that "mu is not equal to 8" 
B)  the alternative hypothesis is that "mu is not equal to 8" 
C)  either of these 
D)  none of these 
A)  the null hypothesis is that "mu is not equal to 8" 
B)  the alternative hypothesis is that "mu is not equal to 8" 
C)  either of these 
D)  none of these

Question 6

Describe the difference between a Type I and Type II error. When do these occur?

Accepted Answer

A Type I error occurs when the

Question 7

Assume that you have an unfair coin. You flip this coin 10 times and conclude that it is fair based upon a statistical test. You have ______.

Accepted Answer

A)  made a correct decision 
B)  committed a Type II error 
C)  committed a Type I error 
D)  none of the 
A)  made a correct decision 
B)  committed a Type II error 
C)  committed a Type I error 
D)  none of the

Question 8

If F1F1F1S1F1F1F10 = .05 and p > .05 ______.

Accepted Answer

A)  the test statistic was beyond the critical value 
B)  you have committed a Type I error 
C)  you should reject the null 
D)  none of these 
A)  the test statistic was beyond the critical value 
B)  you have committed a Type I error 
C)  you should reject the null 
D)  none of these

Question 9

The region is rejection is defined by ______.

Accepted Answer

A)  F1F1F1S1F1F1F10 
B)  P 
C)  F1F1F1S1F1F1F10 
D)  none of these 
A)  F1F1F1S1F1F1F10 
B)  P 
C)  F1F1F1S1F1F1F10 
D)  none of these

Question 10

Which of these is a valid research question?

Accepted Answer

A)  "Do men and women like our product equally?" 
B)  "Do West Coast organizations sell as much as East Coast organizations?" 
C)  "Is sales performance higher after we provide training?" 
D)  all of these 
A)  "Do men and women like our product equally?" 
B)  "Do West Coast organizations sell as much as East Coast organizations?" 
C)  "Is sales performance higher after we provide training?" 
D)  all of these

Question 11

Consider the following research question: Are customer complaint levels different this year than last year? This would be addressed with a ______.

Accepted Answer

A)  two-tailed test 
B)  one-tailed test 
C)  both a and b 
D)  none of these 
A)  two-tailed test 
B)  one-tailed test 
C)  both a and b 
D)  none of these

Question 12

All possible values for a statistical test are described by either the null or alternative hypothesis.

Accepted Answer

A) True 
 B)False

Question 13

When we retain the null hypothesis, we accept the alternative hypothesis.

Accepted Answer

A) True 
 B)False

Question 14

What does p < .05 mean? Explain how you would interpret this.

Accepted Answer

p < .05 means that, if the null were tru

Question 15

If you flip a coin 30 times, and it is always heads, that coin is definitely unfair.

Accepted Answer

A) True 
 B)False

Question 16

Which of these is an example of an appropriate stated null hypothesis?

Accepted Answer

A)  H1: µ = 0 
B)  H0: µ > 90 
C)  H0: µ ≠ 52 
D)  none of these 
A)  H1: µ = 0 
B)  H0: µ > 90 
C)  H0: µ ≠ 52 
D)  none of these

Question 17

If F1F1F1S1F1F1F10F1F1F1S1F1F1F10= .1 and p = .8, we would state in our formal conclusion ______.

Accepted Answer

A)  "Retain the null" 
B)  "Retain the null and accept the alternative" 
C)  "Reject the null and accept the alternative" 
D)  "Reject the alternative and accept the null" 
A)  "Retain the null" 
B)  "Retain the null and accept the alternative" 
C)  "Reject the null and accept the alternative" 
D)  "Reject the alternative and accept the null"

Question 18

When alpha is smaller ______.

Accepted Answer

A)  a larger sample size is required to reject the null 
B)  a smaller sample size is required to reject the null 
C)  beta is larger 
D)  beta is smaller 
A)  a larger sample size is required to reject the null 
B)  a smaller sample size is required to reject the null 
C)  beta is larger 
D)  beta is smaller

Question 19

For the following H0, indicate the most likely H1: H0: µ = 1

Accepted Answer

A)  H1: µ ≥ 1 
B)  H1: µ 1: µ ≠ 1 
D)  H1: µ ≤ 1 
A)  H1: µ ≥ 1 
B)  H1: µ 1: µ ≠ 1 
D)  H1: µ ≤ 1

Question 20

A null hypothesis must at a minimum contain ______.

Accepted Answer

A)  the parameter to be tested 
B)  the theoretical relationship between the parameter and test value 
C)  a value to be tested against the parameter 
D)  all of these 
A)  the parameter to be tested 
B)  the theoretical relationship between the parameter and test value 
C)  a value to be tested against the parameter 
D)  all of these

We might report p = .02 when reporting the significance by hand, but we would be more likely to report p < .05 when reporting the significance using a computer.

When alpha decreases ______.

If  = .05 and p = .02 ______.

"Are our sales numbers the same from year to year?" is a valid research question.

How would your pronounce the following? H₁: µ ≠ 8

Describe the difference between a Type I and Type II error. When do these occur?

Assume that you have an unfair coin. You flip this coin 10 times and conclude that it is fair based upon a statistical test. You have ______.

If  = .05 and p > .05 ______.

The region is rejection is defined by ______.

Which of these is a valid research question?

Consider the following research question: Are customer complaint levels different this year than last year? This would be addressed with a ______.

All possible values for a statistical test are described by either the null or alternative hypothesis.

When we retain the null hypothesis, we accept the alternative hypothesis.

What does p < .05 mean? Explain how you would interpret this.

If you flip a coin 30 times, and it is always heads, that coin is definitely unfair.

Which of these is an example of an appropriate stated null hypothesis?

If = .1 and p = .8, we would state in our formal conclusion ______.

When alpha is smaller ______.

For the following H₀, indicate the most likely H₁: H₀: µ = 1

A null hypothesis must at a minimum contain ______.

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

We might report p = .02 when reporting the significance by hand, but we would be more likely to report p < .05 when reporting the significance using a computer.

When alpha decreases ______.

If  = .05 and p = .02 ______.

"Are our sales numbers the same from year to year?" is a valid research question.

How would your pronounce the following? H1: µ ≠ 8

Describe the difference between a Type I and Type II error. When do these occur?

Assume that you have an unfair coin. You flip this coin 10 times and conclude that it is fair based upon a statistical test. You have ______.

If  = .05 and p > .05 ______.

The region is rejection is defined by ______.

Which of these is a valid research question?

Consider the following research question: Are customer complaint levels different this year than last year? This would be addressed with a ______.

All possible values for a statistical test are described by either the null or alternative hypothesis.

When we retain the null hypothesis, we accept the alternative hypothesis.

What does p < .05 mean? Explain how you would interpret this.

If you flip a coin 30 times, and it is always heads, that coin is definitely unfair.

Which of these is an example of an appropriate stated null hypothesis?

If = .1 and p = .8, we would state in our formal conclusion ______.

When alpha is smaller ______.

For the following H0, indicate the most likely H1: H0: µ = 1

A null hypothesis must at a minimum contain ______.

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

How would your pronounce the following? H₁: µ ≠ 8

For the following H₀, indicate the most likely H₁: H₀: µ = 1