Suppose a mutual fund qualifies as having moderate risk if the standard deviation of its monthly rate of return is less than 4%. A mutual-fund rating agency randomly selects 21 months and determines the rate of return for a certain fund. The standard deviation of the rate of return is computed to be 2.63%. Is there sufficient evidence to conclude that the has moderate risk at the a=0.05 level of significance? A normal probability plot indicates that the monthly rates of return are normally distributed. () What are the correct hypotheses for this test? The null hypothesis is Hoo 0.04. The alternative hypothesis is H₁ O <0.04. Calculate the value of the test statistic A x₁ = (Round to two decimal places as needed.).

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### Hypothesis Testing for Mutual Fund Risk

**Context:**
Suppose a mutual fund qualifies as having moderate risk if the standard deviation of its monthly rate of return is less than 4%. A mutual-fund rating agency randomly selects 21 months and determines the rate of return for a certain fund. The standard deviation of the rate of return is computed to be 2.63%. Is there sufficient evidence to conclude that the fund has moderate risk at the \(\alpha\) = 0.05 level of significance? A normal probability plot indicates that the monthly rates of return are normally distributed.

**Hypothesis Statements:**
1. **Null Hypothesis (H\(_0\))**: 
   \[
   \sigma = 0.04
   \]
   
2. **Alternative Hypothesis (H\(_1\))**: 
   \[
   \sigma < 0.04
   \]

**Task:**
Calculate the value of the test statistic \(\chi^2_0\).

**Input for Calculation:**
\[
\chi^2_0 = \boxed{} \, \text{(Round to two decimal places as needed.)}
\]

**Additional Resources:**
- *Help me solve this*
- *View an example*
- *Get more help*

### Interface Elements:
- **Clear all**: This button is used to reset the inputs and start the calculation afresh.
- **Check answer**: Once the required calculation is done, this button can be used to verify the answer.

### Screenshot Explanation:
The image shows an educational webpage where students are taught hypothesis testing. The context and hypotheses are clearly defined. Input fields are provided for entering the test statistic value and confirming the hypothesis test solution.

### Visual Analysis:
There are no graphs or diagrams in the image that require further explanation.
Transcribed Image Text:### Hypothesis Testing for Mutual Fund Risk **Context:** Suppose a mutual fund qualifies as having moderate risk if the standard deviation of its monthly rate of return is less than 4%. A mutual-fund rating agency randomly selects 21 months and determines the rate of return for a certain fund. The standard deviation of the rate of return is computed to be 2.63%. Is there sufficient evidence to conclude that the fund has moderate risk at the \(\alpha\) = 0.05 level of significance? A normal probability plot indicates that the monthly rates of return are normally distributed. **Hypothesis Statements:** 1. **Null Hypothesis (H\(_0\))**: \[ \sigma = 0.04 \] 2. **Alternative Hypothesis (H\(_1\))**: \[ \sigma < 0.04 \] **Task:** Calculate the value of the test statistic \(\chi^2_0\). **Input for Calculation:** \[ \chi^2_0 = \boxed{} \, \text{(Round to two decimal places as needed.)} \] **Additional Resources:** - *Help me solve this* - *View an example* - *Get more help* ### Interface Elements: - **Clear all**: This button is used to reset the inputs and start the calculation afresh. - **Check answer**: Once the required calculation is done, this button can be used to verify the answer. ### Screenshot Explanation: The image shows an educational webpage where students are taught hypothesis testing. The context and hypotheses are clearly defined. Input fields are provided for entering the test statistic value and confirming the hypothesis test solution. ### Visual Analysis: There are no graphs or diagrams in the image that require further explanation.
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