For the given confidence level and values of x and n, x=48, n 98, confidence level 90%
For the given confidence level and values of x and n, x=48, n 98, confidence level 90%
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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![### Homework #11: Chapters 8 and 9
**Homework Problem:**
**Question 8 of 33 (1 point) | Attempt 1 of Unlimited**
**For the given confidence level and values of x and n, find the following:**
\[ x = 48, \quad n = 98, \quad \text{confidence level 90%} \]
---
**Part 1 of 3**
1. **(a) Find the point estimate. Round the answers to at least four decimal places, if necessary.**
The point estimate for the given data is **0.4898**.
![Checkbox with a green tick mark indicating completion]
---
**Part 2 of 3**
2. **(b) Find the standard error. Round the answers to at least four decimal places, if necessary.**
The standard error for the given data is \_\_\_
---
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Transcribed Image Text:### Homework #11: Chapters 8 and 9
**Homework Problem:**
**Question 8 of 33 (1 point) | Attempt 1 of Unlimited**
**For the given confidence level and values of x and n, find the following:**
\[ x = 48, \quad n = 98, \quad \text{confidence level 90%} \]
---
**Part 1 of 3**
1. **(a) Find the point estimate. Round the answers to at least four decimal places, if necessary.**
The point estimate for the given data is **0.4898**.
![Checkbox with a green tick mark indicating completion]
---
**Part 2 of 3**
2. **(b) Find the standard error. Round the answers to at least four decimal places, if necessary.**
The standard error for the given data is \_\_\_
---
**User Actions:**
- **Skip Part**
- **Check Answer**
- **Save For Later**
- **Submit Assignment**
![### Homework #11: Chapters 8 and 9
#### Question 4 of 33 (1 point)
**Attempt 1 of Unlimited**
**A population has a standard deviation σ = 17.8.**
---
#### Part 1 of 2
**(a) How large a sample must be drawn so that an 80% confidence interval for μ will have a margin of error equal to 3.8?**
- Round the critical value to no less than three decimal places.
- Round the sample size up to the nearest integer.
**Response:**
A sample size of ___ is needed to be drawn in order to obtain an 80% confidence interval with a margin of error equal to 3.8.
---
#### Part 2 of 2
**(b) If the required confidence level were 99.8%, would the necessary sample size be larger or smaller?**
- (Choose one)
- because the confidence level is (Choose one).
---
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### Explanation of Graphs/Diagrams:
There are no graphs or diagrams in this particular question. The content focuses on calculating sample sizes for confidence intervals in statistical analysis.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa666cb21-4e01-4a08-9d64-d66a4b2c67e7%2F456ed556-970d-4f7f-ae14-632c3f093450%2Fnlhe9sg_processed.jpeg&w=3840&q=75)
Transcribed Image Text:### Homework #11: Chapters 8 and 9
#### Question 4 of 33 (1 point)
**Attempt 1 of Unlimited**
**A population has a standard deviation σ = 17.8.**
---
#### Part 1 of 2
**(a) How large a sample must be drawn so that an 80% confidence interval for μ will have a margin of error equal to 3.8?**
- Round the critical value to no less than three decimal places.
- Round the sample size up to the nearest integer.
**Response:**
A sample size of ___ is needed to be drawn in order to obtain an 80% confidence interval with a margin of error equal to 3.8.
---
#### Part 2 of 2
**(b) If the required confidence level were 99.8%, would the necessary sample size be larger or smaller?**
- (Choose one)
- because the confidence level is (Choose one).
---
**Navigation:**
- [Previous Question] (5)
- [Next Question] (7)
- [Save for Later]
- [Submit Assignment]
- [Check Answer]
---
© 2021 McGraw-Hill Education. All Rights Reserved. Terms of Use | Privacy
---
### Explanation of Graphs/Diagrams:
There are no graphs or diagrams in this particular question. The content focuses on calculating sample sizes for confidence intervals in statistical analysis.
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