Many people believe that the average number of Facebook friends is 145. The population standard deviation is 36.6. A random sample of 46 high school students in a particular county revealed that the average number of Facebook friends was 149. At a=0.01, is there sufficient evidence to conclude that the mean number of friends is greater than 145? Part: 0/5 Part 1 of 5 State the hypotheses and identify the claim with the correct hypothesis. Ho: (Choose one) ▼ D=0 H: (Choose one) ▼ This hypotheses test is a (Choose one) v test. Part: 1/5 Part 2 of 5 Find the critical value(s). Round the answer to two decimal places. If there is more than one critical value, separate them with commas. Critical value(s):
Many people believe that the average number of Facebook friends is 145. The population standard deviation is 36.6. A random sample of 46 high school students in a particular county revealed that the average number of Facebook friends was 149. At a=0.01, is there sufficient evidence to conclude that the mean number of friends is greater than 145? Part: 0/5 Part 1 of 5 State the hypotheses and identify the claim with the correct hypothesis. Ho: (Choose one) ▼ D=0 H: (Choose one) ▼ This hypotheses test is a (Choose one) v test. Part: 1/5 Part 2 of 5 Find the critical value(s). Round the answer to two decimal places. If there is more than one critical value, separate them with commas. Critical value(s):
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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![**Transcription for Educational Website**
---
### Statistical Analysis Activity: Hypothesis Testing
**Compute the Test Value**
- Always round z score values to two decimal places.
- z = [Input Box]
**Part: 3 / 5**
**Make the Decision**
- Choose whether to reject or fail to reject the null hypothesis.
- [Dropdown Box] the null hypothesis. [Buttons: X (cancel), Reset]
**Part: 4 / 5**
**Summarize the Results**
- Discuss whether there is enough evidence to support the claim.
- There [Dropdown Box] enough evidence to support the claim that the mean number of Facebook friends is greater than 145. [Buttons: X (cancel), Reset]
**Progress Indicator**
- Part 3 and Part 4 show a progress bar indicating the current stage in the 5-part process. Both are partially filled, corresponding to steps 3 and 4 completion.
---
This exercise guides students through the process of computing and analyzing a hypothesis test, enhancing their understanding of statistical testing concepts.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F90dbf7ad-ea4d-494a-bf39-33849b4f25e9%2Fdc4f23c3-4b28-4588-bc69-f3c7940b05c1%2Fecvknl_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**Transcription for Educational Website**
---
### Statistical Analysis Activity: Hypothesis Testing
**Compute the Test Value**
- Always round z score values to two decimal places.
- z = [Input Box]
**Part: 3 / 5**
**Make the Decision**
- Choose whether to reject or fail to reject the null hypothesis.
- [Dropdown Box] the null hypothesis. [Buttons: X (cancel), Reset]
**Part: 4 / 5**
**Summarize the Results**
- Discuss whether there is enough evidence to support the claim.
- There [Dropdown Box] enough evidence to support the claim that the mean number of Facebook friends is greater than 145. [Buttons: X (cancel), Reset]
**Progress Indicator**
- Part 3 and Part 4 show a progress bar indicating the current stage in the 5-part process. Both are partially filled, corresponding to steps 3 and 4 completion.
---
This exercise guides students through the process of computing and analyzing a hypothesis test, enhancing their understanding of statistical testing concepts.
![**Image Text Transcription and Explanation**
**Context**: This exercise explores hypothesis testing regarding the average number of Facebook friends.
**Problem Statement:**
Many people believe that the average number of Facebook friends is 145. The population standard deviation is 36.6. A random sample of 46 high school students in a particular county revealed that the average number of Facebook friends was 149. At \(\alpha = 0.01\), is there sufficient evidence to conclude that the mean number of friends is greater than 145?
**Questions and Interactive Elements:**
**Part 0 of 5**: [Progress bar not filled]
**Part 1 of 5:**
- **Task:** State the hypotheses and identify the claim with the correct hypothesis.
**Interactive Options:**
- \(H_0\) (Null Hypothesis) and \(H_1\) (Alternative Hypothesis) selection boxes with options:
- \(\mu =\)
- \(\mu \neq\)
- \(\mu >\)
- \(\mu <\)
- **Dropdown to specify** if this hypothesis test is a one-tailed or two-tailed test.
**Graphical Explanation**:
The graphical box presents population mean symbol \(\mu\) with selection checkboxes for different hypothesis scenarios, indicating a decision between various relational operators for hypothesis formulation.
**Part 1/5**: [Progress bar slightly filled]
**Part 2 of 5:**
- **Task:** Find the critical value(s). Round the answer to two decimal places. If there is more than one critical value, separate them with commas.
**Interactive Option:**
- Enter critical value(s) in a given input box.
This exercise involves statistical hypothesis testing, requiring students to propose and evaluate hypotheses about the average number of Facebook friends using population parameters and sample statistics.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F90dbf7ad-ea4d-494a-bf39-33849b4f25e9%2Fdc4f23c3-4b28-4588-bc69-f3c7940b05c1%2Fo1ict6_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**Image Text Transcription and Explanation**
**Context**: This exercise explores hypothesis testing regarding the average number of Facebook friends.
**Problem Statement:**
Many people believe that the average number of Facebook friends is 145. The population standard deviation is 36.6. A random sample of 46 high school students in a particular county revealed that the average number of Facebook friends was 149. At \(\alpha = 0.01\), is there sufficient evidence to conclude that the mean number of friends is greater than 145?
**Questions and Interactive Elements:**
**Part 0 of 5**: [Progress bar not filled]
**Part 1 of 5:**
- **Task:** State the hypotheses and identify the claim with the correct hypothesis.
**Interactive Options:**
- \(H_0\) (Null Hypothesis) and \(H_1\) (Alternative Hypothesis) selection boxes with options:
- \(\mu =\)
- \(\mu \neq\)
- \(\mu >\)
- \(\mu <\)
- **Dropdown to specify** if this hypothesis test is a one-tailed or two-tailed test.
**Graphical Explanation**:
The graphical box presents population mean symbol \(\mu\) with selection checkboxes for different hypothesis scenarios, indicating a decision between various relational operators for hypothesis formulation.
**Part 1/5**: [Progress bar slightly filled]
**Part 2 of 5:**
- **Task:** Find the critical value(s). Round the answer to two decimal places. If there is more than one critical value, separate them with commas.
**Interactive Option:**
- Enter critical value(s) in a given input box.
This exercise involves statistical hypothesis testing, requiring students to propose and evaluate hypotheses about the average number of Facebook friends using population parameters and sample statistics.
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