Question

A group of doctors want to know if people develop sense of taste goes away as they age. To test this, the doctors work with 76 10-year-olds subjects and have them report how many bitter foods they like (e.g., brussels sprouts, coffee, arugula), M = 3.22, SD = 5.4. After all 76 children turn 18-years-old, the researchers ask them to again report the number of bitter foods they like, M = 4.6, SD = 11.5, significant r = -.3. Do people develop a taste for bitter foods as they age at alpha = .01?

Show all work and complete all reporting results steps

a. name the test;

b. report the appropriate statistic;

c. calculate df;

d. report the critical value;

e. state whether you reject/fail to reject the null

f. calculate the effect size if appropriate;

g. calculate post hoc tests if appropriate

explain the results in non-statistical terms

Answer 1

a. name the test;

Correlation test

b. report the appropriate statistic;

r = -0.3

c. calculate df;

df = 76 - 2 = 74

d. report the critical value;

The critical value is 0.283.

e. state whether you reject/fail to reject the null

Since 0.3 > 0.283, we can reject the null hypothesis.

f. calculate the effect size if appropriate;

r^2 = -0.3^2 = 0.09

g. calculate post hoc tests if appropriate

explain the results in non-statistical terms

Thus, people develop a taste for bitter foods as they age.