Classify the hypothesis test as two-tailed, left-tailed, or right-tailed. In 1994, the average durationof long-distance telephone calls originating in one town was 6.6 minutes. A long- distance telephone company wants to perform a hypothesis test to determine whether the average duration of long-distance phone calls has changed from 1994 mean of 6.6 minutes. O two-tailed O left-tailed O right-tailed

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**Classify the hypothesis test as two-tailed, left-tailed, or right-tailed. In 1994, the average duration of long-distance telephone calls originating in one town was 6.6 minutes. A long-distance telephone company wants to perform a hypothesis test to determine whether the average duration of long-distance phone calls has changed from 1994 mean of 6.6 minutes.**

- ○ two-tailed
- ○ left-tailed
- ○ right-tailed

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In this scenario:
- **Two-tailed test**: This test would be appropriate if the company is checking whether the average duration has either increased or decreased from the 1994 mean of 6.6 minutes.
- **Left-tailed test**: This test would be considered if the company aims to identify if the average duration has decreased from the 1994 mean of 6.6 minutes.
- **Right-tailed test**: This would be used if the company wants to see if the average duration has increased from the 1994 mean of 6.6 minutes.
Transcribed Image Text:--- **Classify the hypothesis test as two-tailed, left-tailed, or right-tailed. In 1994, the average duration of long-distance telephone calls originating in one town was 6.6 minutes. A long-distance telephone company wants to perform a hypothesis test to determine whether the average duration of long-distance phone calls has changed from 1994 mean of 6.6 minutes.** - ○ two-tailed - ○ left-tailed - ○ right-tailed --- In this scenario: - **Two-tailed test**: This test would be appropriate if the company is checking whether the average duration has either increased or decreased from the 1994 mean of 6.6 minutes. - **Left-tailed test**: This test would be considered if the company aims to identify if the average duration has decreased from the 1994 mean of 6.6 minutes. - **Right-tailed test**: This would be used if the company wants to see if the average duration has increased from the 1994 mean of 6.6 minutes.
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