0/5 Consider the following random sample of diameter measurements (in inches) of 16 softballs. 4.69, 4.78, 4.89, 4.7, 4.79, 4.87, 4.83, 4.86, 4.8, 4.7, 4.86, 4.83, 4.84, 4.84, 4.88, 4.74 Send data to calculator Send data to Excel If we assume that the diameter measurements are normally distributed, find a 99% confidence interval for the mean diameter of a softball. Give the lower lir and upper limit of the 99% confidence interval. Carry your intermediate computations to at least three decimal places. Round your answers to two decimal places. (If necessary, consult a list of formulas.) Lower limit: Upper limit:

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Author:Amos Gilat
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### Confidence Interval for Softball Diameter Measurements

Consider the following random sample of diameter measurements (in inches) of 16 softballs:

```
4.69, 4.78, 4.89, 4.7, 4.79, 4.87, 4.83, 4.86, 4.8, 4.87, 4.86, 4.84, 4.84, 4.88, 4.74
```

#### Instructions:
1. **Data Analysis Tools:** 
    - Use the provided tools to send data directly to a calculator or export the data to Excel for further analysis:
        - **Send data to calculator**
        - **Send data to Excel**

2. **Assumption:** 
    - Assume that the diameter measurements are **normally distributed**.

3. **Task:** 
    - Find a **99% confidence interval** for the **mean diameter** of a softball.
    - Provide the lower limit and upper limit of the confidence interval.

#### Computational Details:
- Carry your intermediate computations to at least three decimal places.
- Round your final answers to **two decimal places**. 
- Refer to the necessary formulas if needed ([list of formulas](#)).

#### Input Fields:
- **Lower limit:** [Input Box]
- **Upper limit:** [Input Box]

#### Functionality:
- Utilize buttons next to the input fields for additional operations:
    - [X] Clear input
    - [↻] Reset input
    - [?] Help or hint

#### Additional Resources:
- **Explanation Button:** Provides step-by-step guidance on how the problem is solved.
- **Check Button:** Validates the inputs and computations.

##### Example of Steps Involved:
1. Calculate the sample mean (\(\bar{x}\)) and sample standard deviation (s).
2. Determine the t-score corresponding to a 99% confidence level and 15 degrees of freedom (since \(n - 1 = 16 - 1\)).
3. Calculate the margin of error (ME) using the formula:
\[ \text{ME} = t \times \frac{s}{\sqrt{n}} \]
4. Determine the confidence interval:
\[ \text{CI} = \left(\bar{x} - \text{ME}, \bar{x} + \text{ME}\right) \]

##### Notes:
- Ensure the tools and
Transcribed Image Text:### Confidence Interval for Softball Diameter Measurements Consider the following random sample of diameter measurements (in inches) of 16 softballs: ``` 4.69, 4.78, 4.89, 4.7, 4.79, 4.87, 4.83, 4.86, 4.8, 4.87, 4.86, 4.84, 4.84, 4.88, 4.74 ``` #### Instructions: 1. **Data Analysis Tools:** - Use the provided tools to send data directly to a calculator or export the data to Excel for further analysis: - **Send data to calculator** - **Send data to Excel** 2. **Assumption:** - Assume that the diameter measurements are **normally distributed**. 3. **Task:** - Find a **99% confidence interval** for the **mean diameter** of a softball. - Provide the lower limit and upper limit of the confidence interval. #### Computational Details: - Carry your intermediate computations to at least three decimal places. - Round your final answers to **two decimal places**. - Refer to the necessary formulas if needed ([list of formulas](#)). #### Input Fields: - **Lower limit:** [Input Box] - **Upper limit:** [Input Box] #### Functionality: - Utilize buttons next to the input fields for additional operations: - [X] Clear input - [↻] Reset input - [?] Help or hint #### Additional Resources: - **Explanation Button:** Provides step-by-step guidance on how the problem is solved. - **Check Button:** Validates the inputs and computations. ##### Example of Steps Involved: 1. Calculate the sample mean (\(\bar{x}\)) and sample standard deviation (s). 2. Determine the t-score corresponding to a 99% confidence level and 15 degrees of freedom (since \(n - 1 = 16 - 1\)). 3. Calculate the margin of error (ME) using the formula: \[ \text{ME} = t \times \frac{s}{\sqrt{n}} \] 4. Determine the confidence interval: \[ \text{CI} = \left(\bar{x} - \text{ME}, \bar{x} + \text{ME}\right) \] ##### Notes: - Ensure the tools and
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