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A study of the effect of television commercials on 12-year-old children measured their attention span, in seconds. The commercials were for clothes, food, and toys.
Clothes Food Toys
27 44 6122 49 6446 37 5735 56 4828 47 6331 42 5317 34 4831 43 5820 57 47 47 51 44 51 54
Complete the ANOVA table. Use 0.05 significance level. (Round the SS and MS values to 1 decimal place and F value to 2 decimal places. Leave no cells blank-be certain to enter "0" wherever required. Round the df values to the nearest whole numbers.)
Find the values of mean and standard deviation. (Round the mean and standard deviation values to 3 decimal places.)
Is there a difference in the mean attention span of the children for the various commercials?
Are there significant differences between pairs of means?
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Caselet on McDonald’s vs. Burger King - Waiting time
Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.
Problems on Sampling Variability and Standard Error and Confidence Intervals
Estimate the population mean
Conduct a marketing experiment in which students are to taste one of two different brands of soft drink
Find out the probability
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