Question Part Points Submissions Used 7. O 3/11 points I Previous Answers Privit
ID: 3182389 • Letter: Q
Question
Question Part Points Submissions Used 7. O 3/11 points I Previous Answers Priviterastats2 12.E.025 My Notes Iconic memory is a type of memory that holds visual information for about half a second 0.5 seconds). To demonstrate this type of memory, participants were shown three rows of four letters for 50 m seconds. They were then asked to recall as many letters as possible, with a o-, 0.5-, or 1.0-second delay before responding. Researchers hypothesized that longer delays would result in poorer recall. The number of letters correctly recalled is given in the table. Delay Before Recall 0.5 10 5 2 7 3 4 4 6 2 (a) Complete the F-table. Round your values for MS and Fto two decimal places.) Source of variation Ss dr I Ms F Between groups Within groups (error) 15 Total (b) Compute Tukey's HSD post hoc test and interpret the results. (Assume alpha equal to 0.05. Round your answer to two decimal places. The critical value is for each pairwise comparison. Which of the comparisons had significant differences? (Select all that apply.) Recall following a half second delay was significantly different from recall following a one second delay. O The null hypothesis of no difference should be retained because none of the pairwise comparisons demonstrate a significant difference. O Recall following no delay was significantly different from recall following a one second delay. O Recall following no delay was significantly different from recall following a half second delay.Explanation / Answer
Answer:
a).
One factor ANOVA
Mean
n
Std. Dev
8.0
6
2.53
Delay 0
6.0
6
2.19
Before 0.5
4.0
6
1.90
Recall 1
6.0
18
2.68
Total
ANOVA table
Source
SS
df
MS
F
p-value
Treatment
48.00
2
24.000
4.86
.0235
Error
74.00
15
4.933
Total
122.00
17
Tukey simultaneous comparison t-values (d.f. = 15)
Recall 1
Before 0.5
Delay 0
4.0
6.0
8.0
Recall 1
4.0
Before 0.5
6.0
1.56
Delay 0
8.0
3.12
1.56
critical values for experimentwise error rate:
0.05
2.60
0.01
3.42
(b) Compute Tukey's HSD post hoc test and interpret the results. (Assume alpha equal to 0.05. Round your answer to two decimal places.)
The critical value is 2.60 for each pairwise comparison.
Which of the comparisons had significant differences? (Select all that apply.)
Answer:
Recall following no delay was significantly different from recall following a one second delay.
One factor ANOVA
Mean
n
Std. Dev
8.0
6
2.53
Delay 0
6.0
6
2.19
Before 0.5
4.0
6
1.90
Recall 1
6.0
18
2.68
Total
ANOVA table
Source
SS
df
MS
F
p-value
Treatment
48.00
2
24.000
4.86
.0235
Error
74.00
15
4.933
Total
122.00
17
Tukey simultaneous comparison t-values (d.f. = 15)
Recall 1
Before 0.5
Delay 0
4.0
6.0
8.0
Recall 1
4.0
Before 0.5
6.0
1.56
Delay 0
8.0
3.12
1.56
critical values for experimentwise error rate:
0.05
2.60
0.01
3.42
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.