31 Sample size 31 Sample mean 12.85 mph 7.9 mph Population standard deviation 3.3 mph 2.8 mph 2. At age 9 the average weight (21.3 kg) and the average height (124.5 cm) for both boys and girls are exactly the same. A random sample of 9-year-olds yielded these results. Estimate the mean difference in height between boys and girls with 95% confidence. Does your interval the given claim? Boys Girls Sample size 60 50 Mean height, cm 123.5 126.2 Population variance 98 120 e

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Q: How much do wild mountain lions weigh? Adult wild mountain lions (18 months or older) captured and…

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