Reference no: EM132410299

You are curious about whether or not eating too much of a good thing will decrease a person's preference for that type of food. You ask 12 people how much they like pizza on a scale from 1 to 7, where 7 is highly enjoyable and 1 is not enjoyable. Then, you make them eat a pizza for dinner every day for two weeks. After that, you ask them how much they like pizza.

#Before the study, you observe the values:

# 7 7 3 1 6 5 4 3 3 4 6 7

#After the study, you observe the values:

# 2 1 4 4 1 1 2 1 6 4 5 4

#1) Are the groups independent? Examine the means and SDs for each of the groups

#2) Use the appropriate t-test to test the null hypothesis that mean score for before=after. Do you reject or fail to reject the null?