Dr. Wind is interested in whether weather influences how people drive. She has 30 people drive...

Dr. Wind is interested in whether weather influences how people drive. She has 30 people drive in three different weather conditions (10 drive in sunny conditions, 10 drive in foggy conditions, and 10 drive in rainy conditions) and measures how fast they drive on the freeway.

1. What is the IV? How many levels does it have? Please name the levels. Is it between- or within-subjects?

2. What is the DV? What is its scale of measurement?

3. What is the appropriate statistical analysis for these data? Please conduct it.

Sunny	Foggy	Rainy
85	55	68
65	32	54
68	45	57
73	33	43
88	51	78
75	49	58
68	39	56
71	28	54
83	43	56
82	44	55

4. Write up the results following APA style. Two to three sentences is sufficient.

5. Create a graph displaying the means and standard deviations of the groups.

Solutions

Expert Solution

1. The independent variable (IV) is weather condition. There are 3 levels of the IV, namely, sunny conditions, foggy conditions, and rainy conditions. This is a between-subjects study.

2. The dependent variable(DV) is driving speed. The scale of measurement is ratio scale.

3. The appropriate statistical test for this study is the one way ANOVA. The results are as under:

4. An analysis of variance showed that the effect of weather was significant, F(2,27) = 37.56, p < .05.

Please post the other question separately as we are supposed to answer just one question or four subparts of a single question.

Hayet Jeridi answered 5 months ago

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