A child psychologist is interested in the effects of diet on behavior. He places four groups...

A child psychologist is interested in the effects of diet on behavior. He places four groups of eight children on different diets that vary in their level of sugar content. He scores the amount of activity in the children on a scale from 1 to 10. The data appear in the file DIET.csv. Use a 1-way ANOVA and (if appropriate) a S-N-K post hoc test to determine if sugar effects behavior and which levels of sugar produce different activity levels from one another. What is the null hypothesis of the F? What is the alternative hypothesis F? What is the null hypothesis of each Q? What is the alternative hypothesis of each Q? Remember to choose your own a level before you do the analysis. Use an alpha level of 0.01.

DIET	SCORE
NOSUGAR	8
NOSUGAR	5
NOSUGAR	8
NOSUGAR	7
NOSUGAR	7
NOSUGAR	8
NOSUGAR	5
NOSUGAR	5
LOWSUGAR	9
LOWSUGAR	8
LOWSUGAR	7
LOWSUGAR	9
LOWSUGAR	8
LOWSUGAR	7
LOWSUGAR	7
LOWSUGAR	8
MEDSUGAR	10
MEDSUGAR	7
MEDSUGAR	6
MEDSUGAR	7
MEDSUGAR	9
MEDSUGAR	8
MEDSUGAR	10
MEDSUGAR	10
HIGHSUGAR	13
HIGHSUGAR	10
HIGHSUGAR	12
HIGHSUGAR	10
HIGHSUGAR	10
HIGHSUGAR	10
HIGHSUGAR	13
HIGHSUGAR	12

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The r code and explanation is given below.

orchestra answered 1 year ago

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