State whether the standardized test statistic t indicates that you should reject the null hypothesis. Explain. (a) t=2.221 (b) t=0 (c) t= - 2.121 (d) t= -2.245 te-2.183 (a) For t=2.221, should you reject or fail to reject the null hypothesis? O A. Fail to reject Ho, becauset< -2.183. O B. Reject Ho, because t> -2.183. OC. Reject Ho, because t< - 2.183. O D. Fail to reject Ho, becauset> -2.183. (b) For t= 0, should you reject or fail to reject the null hypothesis?

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Topic Video
Question
**Transcription of Educational Content:**

**Topic: Hypothesis Testing with Standardized Test Statistics**

State whether the standardized test statistic \( t \) indicates that you should reject the null hypothesis. Explain.

Given values:
- (a) \( t = 2.221 \)
- (b) \( t = 0 \)
- (c) \( t = -2.121 \)
- (d) \( t = -2.245 \)

**Questions:**
(a) For \( t = 2.221 \), should you reject or fail to reject the null hypothesis?
- **A.** Fail to reject \( H_0 \), because \( t < 2.183 \).
- **B.** Reject \( H_0 \), because \( t > 2.183 \).
- **C.** Reject \( H_0 \), because \( t < -2.183 \).
- **D.** Fail to reject \( H_0 \), because \( t > -2.183 \).

(b) For \( t = 0 \), should you reject or fail to reject the null hypothesis?

**Graph Explanation:**
The graph illustrates a standard normal distribution curve. The critical value is marked at \( t_0 = -2.183 \). The shaded region indicates the rejection area in a two-tailed hypothesis test, which visually displays where the values of \( t \) would lead to rejecting the null hypothesis. The curve shows that one critical value lies left on the horizontal axis, implying this is likely a left-tailed or two-tailed test. Values of \( t \) falling into this region would suggest rejecting the null hypothesis, depending on the specific hypothesis and significance level.
Transcribed Image Text:**Transcription of Educational Content:** **Topic: Hypothesis Testing with Standardized Test Statistics** State whether the standardized test statistic \( t \) indicates that you should reject the null hypothesis. Explain. Given values: - (a) \( t = 2.221 \) - (b) \( t = 0 \) - (c) \( t = -2.121 \) - (d) \( t = -2.245 \) **Questions:** (a) For \( t = 2.221 \), should you reject or fail to reject the null hypothesis? - **A.** Fail to reject \( H_0 \), because \( t < 2.183 \). - **B.** Reject \( H_0 \), because \( t > 2.183 \). - **C.** Reject \( H_0 \), because \( t < -2.183 \). - **D.** Fail to reject \( H_0 \), because \( t > -2.183 \). (b) For \( t = 0 \), should you reject or fail to reject the null hypothesis? **Graph Explanation:** The graph illustrates a standard normal distribution curve. The critical value is marked at \( t_0 = -2.183 \). The shaded region indicates the rejection area in a two-tailed hypothesis test, which visually displays where the values of \( t \) would lead to rejecting the null hypothesis. The curve shows that one critical value lies left on the horizontal axis, implying this is likely a left-tailed or two-tailed test. Values of \( t \) falling into this region would suggest rejecting the null hypothesis, depending on the specific hypothesis and significance level.
### Understanding the Standardized Test Statistic and Null Hypothesis Rejection

This exercise involves determining whether specific standardized test statistics (\( t \)) indicate the rejection of the null hypothesis. Let's analyze each provided scenario.

#### Question:
State whether the standardized test statistic indicates that you should reject the null hypothesis. Explain.

#### Options:
(a) \( t = 2.221 \)  
(b) \( t = 0 \)  
(c) \( t = -2.121 \)  
(d) \( t = -2.245 \)

The accompanying graph is a standard bell curve with a critical value \( t_0 = -2.183 \). This value marks the threshold for rejection of the null hypothesis on the left tail of the distribution.

#### Evaluation:
- For \( t = 2.221 \): Since \( 2.221 > -2.183 \), we do not reject the null hypothesis.
- For \( t = 0 \): Since \( 0 > -2.183 \), we do not reject the null hypothesis.
- For \( t = -2.121 \): Since \(-2.121 > -2.183 \), we do not reject the null hypothesis.
- For \( t = -2.245 \): Since \(-2.245 < -2.183 \), we reject the null hypothesis.

#### Analysis for Part (b):
For \( t = 0 \), should you reject or fail to reject the null hypothesis?
- **Options:**
  - A. Fail to reject \( H_0 \), because \( t > -2.183 \).
  - B. Fail to reject \( H_0 \), because \( t < -2.183 \).
  - C. Reject \( H_0 \), because \( t < -2.183 \).
  - D. Reject \( H_0 \), because \( t > -2.183 \).

**Correct Choice:** A. Fail to reject \( H_0 \), because \( t > -2.183 \).

#### Analysis for Part (c):
For \( t = -2.121 \), should you reject or fail to reject the null hypothesis?
- Click to select your answer.

With a critical value of \( t_0 = -2.183 \), the conclusion for each scenario above assists in determining the decision regarding the null hypothesis based on the comparison of the calculated \( t \)-value against
Transcribed Image Text:### Understanding the Standardized Test Statistic and Null Hypothesis Rejection This exercise involves determining whether specific standardized test statistics (\( t \)) indicate the rejection of the null hypothesis. Let's analyze each provided scenario. #### Question: State whether the standardized test statistic indicates that you should reject the null hypothesis. Explain. #### Options: (a) \( t = 2.221 \) (b) \( t = 0 \) (c) \( t = -2.121 \) (d) \( t = -2.245 \) The accompanying graph is a standard bell curve with a critical value \( t_0 = -2.183 \). This value marks the threshold for rejection of the null hypothesis on the left tail of the distribution. #### Evaluation: - For \( t = 2.221 \): Since \( 2.221 > -2.183 \), we do not reject the null hypothesis. - For \( t = 0 \): Since \( 0 > -2.183 \), we do not reject the null hypothesis. - For \( t = -2.121 \): Since \(-2.121 > -2.183 \), we do not reject the null hypothesis. - For \( t = -2.245 \): Since \(-2.245 < -2.183 \), we reject the null hypothesis. #### Analysis for Part (b): For \( t = 0 \), should you reject or fail to reject the null hypothesis? - **Options:** - A. Fail to reject \( H_0 \), because \( t > -2.183 \). - B. Fail to reject \( H_0 \), because \( t < -2.183 \). - C. Reject \( H_0 \), because \( t < -2.183 \). - D. Reject \( H_0 \), because \( t > -2.183 \). **Correct Choice:** A. Fail to reject \( H_0 \), because \( t > -2.183 \). #### Analysis for Part (c): For \( t = -2.121 \), should you reject or fail to reject the null hypothesis? - Click to select your answer. With a critical value of \( t_0 = -2.183 \), the conclusion for each scenario above assists in determining the decision regarding the null hypothesis based on the comparison of the calculated \( t \)-value against
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
Hypothesis Tests and Confidence Intervals for Means
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman