(a) There is no difference in average adult weights among four regions of the country (east, west, south, and north).
(b) There is a difference in scores on a happiness scale between first-year students and seniors.
(c) There is no relationship between years of schooling and religion practiced.
2. A survey about opera musical tastes measures liking or disliking using a 10 point scale where a 10 = likes very much. Here are the findings:
College graduates mean = 5.7
Non college-grads mean = 4.1
t value = 12.2, p < .001
(a) Why is a t-test being used here?
(b) Interpret what you are finding for fellow statistical experts.
(c) What do you tell the general public you have discovered?
a) ANOVA F-test
b) t-test (independent sample)
c) ANOVA F-test
a) comparing means between two independent categories
b) The probability of obtaining a t value of that size is less than one in one-thousand. Therefore, you reject the null and declare that there is a statistically significant difference in means.
c) College graduates tend to like classical music more than those who did not graduate from college, although neither group is highly favorable.