Question

1. A researcher hypothesizes that volume of background noise affects employee accuracy on work-related tasks and sets up an experiment to investigate this. He recruits 15 adult volunteers and randomly assigns 5 to complete a task in a room with high volume noise in the background, 5 to complete the task with moderate volume noise in the background, and 5 to complete the task with low volume noise in the background. All participants completed the same task. The dependent variable is # of errors made. The data are as follows: Low volume Moderate volume High volume 6 7 7 5 6 8 5 7 9 2 5 6 4 8 8 a. State $H_0$ and $H_a$. b. Compute $F_{obt}$ and complete the ANOVA summary table. c. With $\alpha = .05$, what is $F_{crit}$? d. Write the statistical result for $F_{obt}$ using proper format e. What is your decision about $H_0$? f. Compute the appropriate post-hoc test and identify which means differ significantly. g. State your conclusion about the relationship between volume of background noise and employee accuracy on work tasks. This should include 2 sentences- one that describes the result of the ANOVA and one that describes the result of the post-hoc test. h. If your $F_{obt}$ were not significant (i.e., F not in the rejection region) what would you conclude about the relationship between volume of background noise and employee accuracy?

Name: 1 a researcher hypothesizes that volume of background noise affects employee accuracy on work related tasks and sets up an experiment to investigate this he recruits 15 adult volunteers and 21583
Uploaded: 2022-08-26T12:59:51-08:00
Duration: 5 min 27 s
Channel: David Nguyen
Description: 1 a researcher hypothesizes that volume of background noise affects employee accuracy on work related tasks and sets up an experiment to investigate this he recruits 15 adult volunteers and 21583

1. A researcher hypothesizes that volume of background noise affects employee accuracy on work-related tasks and sets up an experiment to investigate this. He recruits 15 adult volunteers and randomly assigns 5 to complete a task in a room with high volume noise in the background, 5 to complete the task with moderate volume noise in the background, and 5 to complete the task with low volume noise in the background. All participants completed the same task. The dependent variable is # of errors made. The data are as follows:

Low volume Moderate volume High volume
6 7 7
5 6 8
5 7 9
2 5 6
4 8 8

a. State $H_0$ and $H_a$.
b. Compute $F_{obt}$ and complete the ANOVA summary table.
c. With $\alpha = .05$, what is $F_{crit}$?
d. Write the statistical result for $F_{obt}$ using proper format
e. What is your decision about $H_0$?
f. Compute the appropriate post-hoc test and identify which means differ significantly.
g. State your conclusion about the relationship between volume of background noise and employee accuracy on work tasks. This should include 2 sentences- one that describes the result of the ANOVA and one that describes the result of the post-hoc test.
h. If your $F_{obt}$ were not significant (i.e., F not in the rejection region) what would you conclude about the relationship between volume of background noise and employee accuracy?

1 a researcher hypothesizes that volume of background noise affects employee accuracy on work related tasks and sets up an experiment to investigate this he recruits 15 adult volunteers and 21583

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