Colin has always heard the saying blondes have more fun and he wants to see if it's true. He's not sure what have more fun means, so he just decides to find out if blondes are happier.
He randomly samples blondes, brunettes, and redheads on his campus and administers a validated happiness scale to each. He conducts 3 separate independent samples t tests on the dependent variable of happiness. What did Colin do wrong?
a. there is no need to conduct the t tests he can simply compare the sample means of the three groups to see which ones are different b. a one-way ANOVA would have told him which pairs of means were significantly different.
c. Conducting multiple t tests is inappropriate because it will inflate the risk of a Type I error beyond .05; he should have conducted an ANOVA and conducted appropriately adjusted post-hoc tests
d. nothing; his procedure and analysis are correct
Question 2
In a study focused on group difference, what is the general rule of thumb regarding the number of individuals per group?
a) 15
b) 30
c) 50
d) 100
Decibel Scale of Frequently Heard Sounds
Apparent and True Orbits of Alpha Centauri.
True Friendship
Which of the following statements is true of linkage?
Fuel should be heard returning to the fuel tank at the fuel return line if the fuel-pump and ...