For the given confidence level and values of x and n, x=48, n 98, confidence level 90%

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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.
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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