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.
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
Publisher:Carter
Chapter10: Statistics
Section10.1: Measures Of Center
Problem 25PFA
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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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