Question: A researcher hypothesizes that children will eat more of foods wrapped in familiar packaging than the same foods wrapped in plain packaging. To test this hypothesis, she records the number of bites that 24 children take of a food given to them wrapped in fast-food packaging versus plain packaging. If the mean difference (fast-food packaging minus plain packaging) is M0 = 12, and sMD = 2.4, then:
(a) Find the confidence limits at a 95% CI for these related samples.
(b) Can we conclude that wrapping foods in familiar packaging increased the number of bites that children took compared to plain packaging?