Question

PSY 2030 -Assignment 4: One-Way Anova

-Due by Sunday, April 19th, at 11:30 PM

-Scores out of 25 points (16 points for Question and 9 points for Question 2)

-Submit by uploading file(s) within "Assignment 4" on Canvas

-SHOW ALL WORK!!

Either very clearly type it (making sure your formulas and integrity/formatting of formulas are extremely clear)

or write it out by hand and attach a scan or photo of your work. Remember that all assignments must reflect your own independent work.

Question #1 (16 points)

A consumer group was interested in comparing the performance of three models of cars. Random samples of six owners were drawn from a list of each model. The owners were asked how many times their cars had undergone repairs in the past 2 years. Using alpha =.01, follow the 8 steps to hypothesis testing to determine whether the cars different significantly in terms of repairs needed.

Model 1 Model 2 Model 3

2 4 9

1 5 6

2 4 4

3 2 3

2 4 7

4 4 5

Question # 2 (9 points)

Regardless of whether there was a significant effect of car model or not in Question 1 , conduct a Tukey HSD post-hoc test to determine whether car models different significantly from one another. Be sure to write out clear and complete conclusion statement and to show your work.

Answer 1