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.
Required:a. What are the null and alternate hypotheses?
b. Complete the ANOVA table. Use 0.05significance level. (Round the SS and MS values to 1decimal place, F value, p-value,and F crit to 2 decimal places. Leave no cellsblank — be certain to enter "0" wherever required. Round the dfvalues to nearest whole number.)
c. What is the teststatistic? (Round your answer to 4 decimalplaces.)
d. What isthe p-value? (Round your answer to 4decimal places.)
e. What is your decision regarding the nullhypothesis?
f. Interpret the result.
g. Compute the 95% confidence intervals thatestimate the difference between each pair ofmeans. (Negative amount should be indicated by a minussign. Round your answers to 2 decimal places.)
(Smaller Mean - Larger Mean) (Larger Mean -Smaller Mean)
The interval for the difference between Clothes and Foodis
The interval for the difference between Clothes and Toys
The interval for the difference between Food and Toys
h. Which pairs of means are statisticallydifferent?
multiple choice
Clothes – Food
Clothes – Toys
Food – Toys
All of the above.
A study of the effect of television commercials on 12-year-old children measured their attention span, in seconds. The c
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answerhappygod
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