(p. 532). Recall that a sample of 229 binge watchers was divided into three age groups (under 20 years, 20-25 years, and over 25 years) and each binge watcher’s lack of ability to control his or her own TV binge-watching behavior–called self-regulation deficiency—was measured on a 20-point scale. The researcher compared the mean selfregulation deficiency scores of binge watchers in the three age groups using an ANOVA.

a. Give the null and alternative hypothesis for this study. L09021 NW NW

b. The means and standard deviations of the self-regulation deficiency scores for the three age groups are provided in the next table. Note that the sample means are different. Is this result sufficient for you to reject the null hypothesis of equal treatment means? Explain.

c. The ANOVA F-value was reported as F = 7.40, with a corresponding p-value of .001. Interpret this result. Age Group n Mean Standard Deviation Under 20 33