A study of the effect of television commercials on 12-year-old children measured their attention span, in...

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A study of the effect of television commercials on 12-year-oldchildren measured their attention span, in seconds. The commercialswere for clothes, food, and toys.
Clothes Food Toys
43 30 52
24 38 58
42 46 43
35 54 49
28 47 63
31 42 53
17 34 48
31 43 58
20 57 47
47 51
44 51
54
a. Complete the ANOVA table using a .05 significance level(Round the SS and MS values to 1 decimal place andF value to 2 decimal places. Leave no cells blank â€” becertain to enter \"0\" wherever required. Round the df values tonearest whole number.)
b. Find the values of mean and standarddeviation. (Round the mean and standard deviation values to3 decimal places.)
c. Is there a difference in the mean attentionspan of the children for the various commercials?
Thehypothesis of identical means can definitely be (Rejected or NotRejected) . Thereis (Adifference, No difference) in the mean attention span.
d.
Are there significant differences between pairs of means?
Clotheshave a mean attention span of at least ten minutes (Above orBelow) the othergroups.

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4.3 Ratings (544 Votes)

Oneway ANOVA cloths food toys Method Null hypothesis All means are equal Alternative hypothesis At least one mean is different Significance level 005 Equal variances were assumed for See Answer

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43	30	52
24	38	58
42	46	43
35	54	49
28	47	63
31	42	53
17	34	48
31	43	58
20	57	47
	47	51
	44	51
	54

43	30	52
24	38	58
42	46	43
35	54	49
28	47	63
31	42	53
17	34	48
31	43	58
20	57	47
	47	51
	44	51
	54