The values listed below are waiting times (in minutes) of customers at two different banks. At Bank A, customers enter a single waiting line that feeds three teller windows. At Bank B, customers may enter any one of three different lines that have formed at three teller windows. Answer the following questions. Bank A Bank B 6.4 4.2 6.6 5.4 6.7 5.7 6.8 6.2 7.1 6.7 Click the icon to view the table of Chi-Square critical values. ... 7.3 7.7 7.5 7.7 Construct a 95% confidence interval for the population standard deviation o at Bank A. min

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**Waiting Time Analysis for Two Banks**

The table below displays the waiting times (in minutes) of customers at two different banks. At Bank A, all customers enter a single waiting line that serves three teller windows. At Bank B, customers have the option to enter any one of three separate lines, with each line serving a distinct teller window. Analyze the data to answer the questions that follow.

| Bank A | 6.4 | 6.6 | 6.7 | 6.8 | 7.1 | 7.3 | 7.5 | 7.9 | 7.9 | 7.9 |
|--------|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|
| Bank B | 4.2 | 5.4 | 5.7 | 6.2 | 6.7 | 7.7 | 7.7 | 8.5 | 9.3 | 10.0 |

- Click the icon to view the table of Chi-Square critical values.

**Task:**
Construct a 95% confidence interval for the population standard deviation \( \sigma \) at Bank A.

\[ \text{min} < \sigma_{\text{Bank A}} < \text{min} \]

*(Round to two decimal places as needed.)*
Transcribed Image Text:**Waiting Time Analysis for Two Banks** The table below displays the waiting times (in minutes) of customers at two different banks. At Bank A, all customers enter a single waiting line that serves three teller windows. At Bank B, customers have the option to enter any one of three separate lines, with each line serving a distinct teller window. Analyze the data to answer the questions that follow. | Bank A | 6.4 | 6.6 | 6.7 | 6.8 | 7.1 | 7.3 | 7.5 | 7.9 | 7.9 | 7.9 | |--------|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----| | Bank B | 4.2 | 5.4 | 5.7 | 6.2 | 6.7 | 7.7 | 7.7 | 8.5 | 9.3 | 10.0 | - Click the icon to view the table of Chi-Square critical values. **Task:** Construct a 95% confidence interval for the population standard deviation \( \sigma \) at Bank A. \[ \text{min} < \sigma_{\text{Bank A}} < \text{min} \] *(Round to two decimal places as needed.)*
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