In: Statistics and Probability
In the morning, after having had nothing to eat since the night before, 75 participants were randomly assigned to one of three groups (25 in each group): Those who were fed a large meal, those who were fed a small meal, and those who were fed nothing. Then all participants were given a memory test. The results were as follows:
Memory Test Score |
|||
Large Meal |
Small Meal |
Nothing |
|
M |
2.1 |
2.5 |
2.9 |
S2 |
1.0 |
1.2 |
.8 |
Based on these results, does amount of breakfast eaten affect
memory?
(Use the .05 level.)
Use the five steps of hypothesis testing.