Question

Assignment 5

1. Did you know that sometimes you eat more just because the food is in front of you? Geier, Rozin, and Doros (2006) studied how portion size affected the amount people consumed. They discovered interesting things such as that people eat more M&M's when the candies are dispersed using a big spoon as compared as when a small spoon is used. They investigated whether people eat more when more food is available. Hypothetical data are presented below for candy presented in a bowl for customers to take and the amount of candy taken by the end of each day of the study.

(a) Using excel compute the Pearson correlation coefficient

(b) Assess the significance of the correlation coefficient, assuming a two-tailed hypothesis test with a p level of 0.05.

Number of Pieces Presented	Number of Pieces Taken
10	3
25	14
50	26
75	44
100	36
125	57
150	41

Answer 1

Answer a. r = 0.8612

Excel-Output

Answer b.

So,

Conclusion: Since p-value = 0.0128 < 0.05 so we Reject Ho at 5% level of significance and conclude that there is significant relationship No. of Pieces Presented and No. of Pieces Taken i.e.