Use the given confidence interval to find the margin of error and the sample mean. (13.2,20.2) The sample mean is (Type an integer or a decimal.)

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### Calculating the Sample Mean and Margin of Error

#### Problem Statement
**Use the given confidence interval to find the margin of error and the sample mean.**

**Confidence Interval:** (13.2, 20.2)

---

#### Solution Steps

1. **Sample Mean Calculation:**
   - **Formula:** \( \text{Sample Mean} = \frac{\text{Lower Limit} + \text{Upper Limit}}{2} \)
   - Plug in the values from the confidence interval: 
     \( \frac{13.2 + 20.2}{2} \)
   - Simplify to get the sample mean: 
     \(  \frac{33.4}{2} = 16.7 \)
     - **Solution:**
       - The sample mean is **16.7**.

2. **Margin of Error Calculation:**
   - **Formula:** \( \text{Margin of Error} = \text{Upper Limit} - \text{Sample Mean} \)
   - Subtract the sample mean from the upper limit:
     \( 20.2 - 16.7 = 3.5 \)
     - **Solution:**
       - The margin of error is **3.5**.

#### User Input Field
- The sample mean is: [16.7] (Type an integer or a decimal.)

---

In this exercise, you learned how to calculate the sample mean and margin of error given a confidence interval. These concepts are essential in statistics for estimating population parameters.
Transcribed Image Text:### Calculating the Sample Mean and Margin of Error #### Problem Statement **Use the given confidence interval to find the margin of error and the sample mean.** **Confidence Interval:** (13.2, 20.2) --- #### Solution Steps 1. **Sample Mean Calculation:** - **Formula:** \( \text{Sample Mean} = \frac{\text{Lower Limit} + \text{Upper Limit}}{2} \) - Plug in the values from the confidence interval: \( \frac{13.2 + 20.2}{2} \) - Simplify to get the sample mean: \( \frac{33.4}{2} = 16.7 \) - **Solution:** - The sample mean is **16.7**. 2. **Margin of Error Calculation:** - **Formula:** \( \text{Margin of Error} = \text{Upper Limit} - \text{Sample Mean} \) - Subtract the sample mean from the upper limit: \( 20.2 - 16.7 = 3.5 \) - **Solution:** - The margin of error is **3.5**. #### User Input Field - The sample mean is: [16.7] (Type an integer or a decimal.) --- In this exercise, you learned how to calculate the sample mean and margin of error given a confidence interval. These concepts are essential in statistics for estimating population parameters.
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