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A recent study compared the time spent together by single and dual-earner couples. According to the records kept during the study, the mean amount of time spent together watching TV among single-earner couples was 64 minutes per day, with a standard deviation of 15.5 minutes. For the dual-earner couples, the mean time was 48.4 and the standard deviation was 18.1. At a 0.01 significance level, can we conclude that the single-earner couples on average spend more time watching TV together? There were 20 single-earner and 12 dual-earner couples studied. State the decision rule, the value of the test statistic, and your decision.
Epiphyseal Plate
A growth plate located at the ends of long bones where new bone tissue is produced during growth in children and adolescents.
Hyaline Cartilage
Cartilage whose cells lie in lacunae separated by a white translucent matrix containing very fine collagen fibers.
Marrow
A soft fatty substance in the cavities of bones, where blood cells are produced.
Periosteum
Fibrous connective tissue that covers the surface of a long bone; contains blood vessels that service the cells within the bone.
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