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
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