4. (15) Younger and older adults participated in a speed of perception study. Each subject had to decide as quickly as possible whether the letter presented was part of the target letter set. The target letters were M, B or Q while all other letters were the non-target letters. The letters were presented either directly in the center of their vision (o-degrees), 4 degrees to the right or left of center, and 8 degrees to the right or left of center. The dependent variable was the time to respond in milliseconds. The data are presented below. Copy and paste the data below into spss to answer the questions below.

Age 0 deg 4 deg 8 deg

1.00 450.00 510.00 630.00

1.00 390.00 480.00 540.00

1.00 570.00 630.00 660.00

1.00 450.00 660.00 720.00

1.00 510.00 666.00 630.00

1.00 360.00 459.00 511.00

1.00 510.00 609.00 719.00

1.00 512.00 668.00 788.00

1.00 520.00 664.00 677.00

1.00 524.00 543.00 678.00

2.00 420.00 570.00 690.00

2.00 600.00 722.00 659.00

2.00 450.00 545.00 789.00

2.00 630.00 660.00 799.00

2.00 420.00 576.00 877.00

2.00 600.00 780.00 811.00

2.00 630.00 691.00 788.00

2.00 480.00 589.00 888.00

2.00 499.00 589.00 998.00

2.00 499.00 555.00 866.00

1. Conduct a 2 (Age) x 3(Dehree) mixed analysis of variance and paste the data below. Be sure to include the Tests of the Within subjects effects and the tests of between subjects effects
2. Does this satisfy the assumption of sphericity? Write the answer below and paste the appropriate output to support the answer.

C. Does this satisfy the assumption of homogeneity of variance? Put the answer below and paste any part from the analysis to support the answer.

D. The main effect of Age was significant and the means are pasted below. What does this conclude?

E. The main effect of degree is significant. Paste the relevant means below and conduct a subsequent Tukey test.

Tukey CD-

Tukey conclusions

F. The interaction is significant and the means are listed below.

Examine age differences at each level of degree.

Younger 479.6 588.9 655.3

Older 522.8 627 816.5

43.2 38.1 161.2

CD Tukey =

Tukey conclusions.