An educational psychologist is examining response times to an on screen stimulus. The researcher believes there might be a weak effect from age, but expects a more pronounced effect for different color cortrasts. She decides to examine a black on white (B/M) combination compared to 2 alternatives: red on white (RW) and yellow on blue (Y/B). Here is the data for response times (in milliseconds): Color Scheme B/W R/W Y/B 44 22 21 9 35 19 28 13 21 24 16-17 21 45 19 33 26 24 24 46 32 13 11 15 19 Age 18-19 17 41 20-21 Using MS Excel, conduct a 2 way NOVA with a = 0.05. Fill in the summary table: Pvalues should be accurate to 4 decimal places and all ather values accurate to 3 decimal places. Source df MS Fratio Avalue Partial Age (A) Color (B Interaction (Ax B) Error 63 Provide the conclusions for this 2-way ANOVA. What is the conclusion regarding the main ellect for age (Aor rows) O There appears to be an elfect due to age. O There is not enaugh evidence to reject the assumption that the marginal mears across age groups are equal. What is the conclusion regarding the main eflect for color (Bor columrsk OThere appears to be an elfect due to color. O There is not enough evidence to reject the assumption that the marginal mears across color groups are equal. What is the conclusion regarding an interaction effect between age and color (Ax B: O here appears to be an interaction effect between age and color. OThere is not enough evidence to reject the assumption of a lack of an interaction

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An educational psychalogist is examining response times to an on-screen stimulus. The researcher believes there might be a weak effect from age, but expecis a more pronounced
effect for different color contrasis. She decides to examine a black on white (B/W) combination compared to 2 alternatives: red on white (R/W) and yellow on blue (Y/B). Here is the
data for response times (in milliseconds):
Color Scheme
B/W
R/W
Y/B
44
22
19
21
21
28
24
35
16-17
21
45
24
26
33
23
24
24
37
16
46
32
Age 18-19
36
13
19
11
15
19
20-21
19
27
Using MS Excel, conduct a 2-wày NOVA with a= 0.05. Fill in the summary table: Pvalues should be accurate to 4 decimal places and all other values accurate to 3 decimal places.
Source
df
MS
Fratio
Pvalue
Partial
Age (A)
Color (B)
Interaction (A x B)
2
2
4
Crror
63
Provide the conclusions for this 2-way ANOVA.
What is the conclusion regarding the main eflect for age (A or rows):
OThere appears to be an effect due to age.
O There is not enaugh evidence to reject the assumption that the marginal means across age groups are equal.
What is the conclusion regarding the main effect for color (Bor columnsk
O There appears to be an effect due D color.
OThere is nat enaugh evidence to reject the assumption that the marginal mears across color groups are equal.
What is the conclusion regarding an interaction effect between age and color (A x B:
OThere appears to be an interaction effect between age and color.
OThere is not enaugh evidence to reject the assumption af a lack of an interaction.
Transcribed Image Text:An educational psychalogist is examining response times to an on-screen stimulus. The researcher believes there might be a weak effect from age, but expecis a more pronounced effect for different color contrasis. She decides to examine a black on white (B/W) combination compared to 2 alternatives: red on white (R/W) and yellow on blue (Y/B). Here is the data for response times (in milliseconds): Color Scheme B/W R/W Y/B 44 22 19 21 21 28 24 35 16-17 21 45 24 26 33 23 24 24 37 16 46 32 Age 18-19 36 13 19 11 15 19 20-21 19 27 Using MS Excel, conduct a 2-wày NOVA with a= 0.05. Fill in the summary table: Pvalues should be accurate to 4 decimal places and all other values accurate to 3 decimal places. Source df MS Fratio Pvalue Partial Age (A) Color (B) Interaction (A x B) 2 2 4 Crror 63 Provide the conclusions for this 2-way ANOVA. What is the conclusion regarding the main eflect for age (A or rows): OThere appears to be an effect due to age. O There is not enaugh evidence to reject the assumption that the marginal means across age groups are equal. What is the conclusion regarding the main effect for color (Bor columnsk O There appears to be an effect due D color. OThere is nat enaugh evidence to reject the assumption that the marginal mears across color groups are equal. What is the conclusion regarding an interaction effect between age and color (A x B: OThere appears to be an interaction effect between age and color. OThere is not enaugh evidence to reject the assumption af a lack of an interaction.
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