I want to assess whether different types of movies increase viewers’ stress response. I recruit 24 individuals and randomly assign them into three groups: Frozen (a Disney kids movie), Nightmare on Elm Street (a horror movie), and Fast & Furious (an action movie). After each participant watches their assigned movie, I measure their heart rate. Test, at an alpha of 0.05, whether the type of movie affects heart rate. What is the null hypothesis? What is the alternative hypothesis? Data: FrozenDV: Heart Rate (BPM)Nightmare on Elm StreetDV: Heart Rate (BPM)Fast & FuriousDV: Heart Rate (BPM)65908570858570867565929062936063976368105747211080 What is the between-groups degrees of freedom (df)? What is the within-groups degrees of freedom (df)? What is the total degrees of freedom (df)? What is our critical F value (from table)? Fill in the ANOVA summary table with your dataSourceSum of SquaresdfMS (Variance)FMovie Error Total What conclusion can we draw? Run a posthoc with a Bonferroni correction and 1) attach your output, and 2) comment on any significant differences between the particular groups (if you have significance in your overall F).

By applying the ANOVA test for a single factor, 1.Null and alternative hypothesis: Ho: µ1 = µ2 =…

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

I want to assess whether different types of movies increase viewers’ stress response. I recruit 24 individuals and randomly assign them into three groups: Frozen (a Disney kids movie), Nightmare on Elm Street (a horror movie), and Fast & Furious (an action movie). After each participant watches their assigned movie, I measure their heart rate. Test, at an alpha of 0.05, whether the type of movie affects heart rate.

What is the null hypothesis?

What is the alternative hypothesis?

Data:

Frozen DV: Heart Rate (BPM)	Nightmare on Elm Street DV: Heart Rate (BPM)	Fast & Furious DV: Heart Rate (BPM)
65	90	85
70	85	85
70	86	75
65	92	90
62	93	60
63	97	63
68	105	74
72	110	80

What is the between-groups degrees of freedom (df)?

What is the within-groups degrees of freedom (df)?

What is the total degrees of freedom (df)?

What is our critical F value (from table)?

Fill in the ANOVA summary table with your data

Source	Sum of Squares	df	MS (Variance)	F
Movie
Error
Total

What conclusion can we draw?

Run a posthoc with a Bonferroni correction and 1) attach your output, and 2) comment on any significant differences between the particular groups (if you have significance in your overall F).

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