The average teaching salary in Georgia is $48,553 per year. The school districts in the metro Atlanta area boast that they pay more. A company that is running a career fair decides to take a random sample of 228 teachers from the metro Atlanta area and record their salaries. The sample mean is $49,021, with a standard deviation of $3,127. Do the data provide statistically significant evidence at the  = 0.05 level that the average teaching salary in the metro Atlanta area is greater than the state average? The P-value of this test is 0.0124. What conclusion should be made? Use  = 0.05. Because the P-value is   = 0.05, we  H0. We  convincing evidence to conclude that the true mean teaching salary in the metro Atlanta area is  the state average.

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The average teaching salary in Georgia is $48,553 per year. The school districts in the metro Atlanta area boast that they pay more. A company that is running a career fair decides to take a random sample of 228 teachers from the metro Atlanta area and record their salaries. The sample mean is $49,021, with a standard deviation of $3,127.

  • Do the data provide statistically significant evidence at the  = 0.05 level that the average teaching salary in the metro Atlanta area is greater than the state average?

The P-value of this test is 0.0124. What conclusion should be made?

  • Use  = 0.05.
  • Because the P-value is   = 0.05, we  H0. We  convincing evidence to conclude that the true mean teaching salary in the metro Atlanta area is  the state average.
### Educational Website Content: Hypothesis Testing in Metro Atlanta Teaching Salaries

**Introduction to the Scenario:**

In Georgia, the average teaching salary is $48,553 per year. However, school districts in the metro Atlanta area claim that they pay more than this average. A company conducting a career fair collected a random sample of 228 teacher salaries from this region. The results showed a sample mean of $49,021 with a standard deviation of $3,127.

**Statistical Question:**

Do these data provide statistically significant evidence at the α = 0.05 level that the average teaching salary in the metro Atlanta area is greater than the state average?

**Understanding the Hypothesis Test:**

**Given Data:**
- **State Average Salary:** $48,553
- **Sample Mean Salary:** $49,021
- **Sample Standard Deviation:** $3,127
- **Sample Size:** 228
- **Significance Level (α):** 0.05

**P-value and Conclusion:**

- **P-value for the Test:** 0.0124

**Decision Making:**

To determine statistical significance, compare the P-value to the significance level:

1. **Use α = 0.05.**
2. Because the **P-value (0.0124)** is **less than** α = 0.05, we **reject** the null hypothesis (H₀).
3. This result provides convincing evidence to conclude that the true mean teaching salary in the metro Atlanta area is **greater than** the state average.

**Conclusion:**

The analysis suggests that teachers in the metro Atlanta area earn more on average than the state-wide teaching salary of $48,553, providing validation to the claims made by the metro Atlanta school districts.
Transcribed Image Text:### Educational Website Content: Hypothesis Testing in Metro Atlanta Teaching Salaries **Introduction to the Scenario:** In Georgia, the average teaching salary is $48,553 per year. However, school districts in the metro Atlanta area claim that they pay more than this average. A company conducting a career fair collected a random sample of 228 teacher salaries from this region. The results showed a sample mean of $49,021 with a standard deviation of $3,127. **Statistical Question:** Do these data provide statistically significant evidence at the α = 0.05 level that the average teaching salary in the metro Atlanta area is greater than the state average? **Understanding the Hypothesis Test:** **Given Data:** - **State Average Salary:** $48,553 - **Sample Mean Salary:** $49,021 - **Sample Standard Deviation:** $3,127 - **Sample Size:** 228 - **Significance Level (α):** 0.05 **P-value and Conclusion:** - **P-value for the Test:** 0.0124 **Decision Making:** To determine statistical significance, compare the P-value to the significance level: 1. **Use α = 0.05.** 2. Because the **P-value (0.0124)** is **less than** α = 0.05, we **reject** the null hypothesis (H₀). 3. This result provides convincing evidence to conclude that the true mean teaching salary in the metro Atlanta area is **greater than** the state average. **Conclusion:** The analysis suggests that teachers in the metro Atlanta area earn more on average than the state-wide teaching salary of $48,553, providing validation to the claims made by the metro Atlanta school districts.
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