A researcher wants to know if there is a difference between the mean amount of sleep that people get for various types of employment status. The table below shows data that was collected from a survey. Part Time Worker Full Time Worker Unemployed 9 8 7 10 10 7 8 9 9 9 6 6 9 8 6 8 8 6 7 7 Ho 12 143 H₁: At least two of the means differ from each other. 8 7 8 8 Assume that all distributions are normal, the three population standard deviations are all the same, and the data was collected independently and randomly. Use a level of significance of = 0.1.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
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Chapter10: Statistics
Section10.1: Measures Of Center
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A researcher is investigating whether there is a difference in the mean amount of sleep among people with different employment statuses. The data is collected from a survey and presented in the table below:

| Unemployed | Part Time Worker | Full Time Worker |
|------------|------------------|-----------------|
| 9          | 9                | 8               |
| 8          | 6                | 6               |
| 6          | 6                | 7               |
| 10         | 7                | 7               |
| 7          | 8                | 8               |
| 8          | 8                | 7               |
| 9          |                  | 8               |

Assumptions:

- All distributions are normal.
- The three population standard deviations are equal.
- Data is collected independently and randomly.
- A significance level of α = 0.1 is used.

Hypotheses:

- \( H_0 \): \(\mu_1 = \mu_2 = \mu_3\)
- \( H_1 \): At least two of the means differ from each other.

Steps to follow:

1. Choose the appropriate test. (A selection option is provided for the user).
2. Calculate the test statistic for the data and provide the answer to 3 decimal places.
3. Determine the p-value for the sample and provide the answer to 4 decimal places.
4. Compare the p-value with α to decide whether to reject or not reject \( H_0 \).
5. Choose the appropriate conclusion.
6. Final conclusion options provided:
   - There is insufficient evidence to support the claim that employment status is a factor in the amount of sleep people get.
   - There is sufficient evidence to support the claim that employment status is a factor in the amount of sleep people get.
Transcribed Image Text:A researcher is investigating whether there is a difference in the mean amount of sleep among people with different employment statuses. The data is collected from a survey and presented in the table below: | Unemployed | Part Time Worker | Full Time Worker | |------------|------------------|-----------------| | 9 | 9 | 8 | | 8 | 6 | 6 | | 6 | 6 | 7 | | 10 | 7 | 7 | | 7 | 8 | 8 | | 8 | 8 | 7 | | 9 | | 8 | Assumptions: - All distributions are normal. - The three population standard deviations are equal. - Data is collected independently and randomly. - A significance level of α = 0.1 is used. Hypotheses: - \( H_0 \): \(\mu_1 = \mu_2 = \mu_3\) - \( H_1 \): At least two of the means differ from each other. Steps to follow: 1. Choose the appropriate test. (A selection option is provided for the user). 2. Calculate the test statistic for the data and provide the answer to 3 decimal places. 3. Determine the p-value for the sample and provide the answer to 4 decimal places. 4. Compare the p-value with α to decide whether to reject or not reject \( H_0 \). 5. Choose the appropriate conclusion. 6. Final conclusion options provided: - There is insufficient evidence to support the claim that employment status is a factor in the amount of sleep people get. - There is sufficient evidence to support the claim that employment status is a factor in the amount of sleep people get.
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