Question 2

Questions 2-15.

Is ophidiophobia (fear of snakes) specific to the size of a snake or will various sizes evoke similar levels of anxiety? Twelve participants were recruited for the study. Four were randomly assigned to view either a small (<1 foot long) snake, a medium (1-2 or large (> 2 foot long) snake for two minutes. The level of anxiety, measured by heartbeats per minute, was recorded for each participant. Is there a significant difference in anxiety towards size of snake?

Small Medium Large

60 72 83

68 75 84

72 80 88

77 81 93

What is the correct null hypothesis for the study?

A) 0:1=2=3H0:1=2=3

B) 0:123H0:123

C) 0:1<2<3H0:1<2<3

D). 0:H0:ijfor somei, jcombination; at least one group mean is different

Question 3

3. What is the correct alternative hypothesis for the study?

A):1=2=3Ha:1=2=3

B):123Ha:123

C):1<2<3Ha:1<2<3

D) :Ha:ijfor somei, jcombination; at least one group mean is different

Question 4

4. Calculate the treatment effects of group 1.

11= __________

(Enter the value in the form #.###)

Question 5

5. Calculate the treatment effects of group 3.

33= _____________

(Enter the value in the form #.###)

Question 6

6. What are the degrees of freedom between groups?

dfB = ___________

(Enter the value as a whole number)

Question 7

7.What are the degrees of freedom within groups?

dfW = ______________

(Enter the value as a whole number)

Question 8

8. What is the F critical value with a .05 level of significance?

Fcrit= _______________

(Enter the value with two-decimals as provided on the table)

Question 9

9. What is the calculated sums of squares between groups?

SSB = _____________

(Enter thevalue in the form #.###)

Question 10

10. What is the calculated sums of squares within groups?

SSW = ____________

(Enter thevalue in the form #.###)

Question 11

11. Calculate the means squares between groups?

MSB = _____________

(Enter thevalue in the form #.###)

Question 12

12. Calculate the means square withingroups?

MSW = ____________

(Enter thevalue in the form #.###)

Question 13

13. Calculate the F-statistic?

F = _______________

(Enter thevalue in the form #.###)

Question 14

14. Selectall truestatements regarding the conclusion.

A.All groups have equal means.

B.All groups have different means.

C.At least one group mean is different from the others

D.The test is statistically significant.

E.The test is not statistically significant.

F.p> .05

G.p< .05

H.Reject the null hypothesis.

I.Retain (fail to reject) the null hypothesis.