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Study Resources (Statistics)

Two baby-rood manufacturers are competing, and manufacturer of brand A believes that their brand causes more weight gain in infants than manufacturer of brand B. A sample of size 15 fed their babies brand A for two months, and saw an average weight gain of 36.93 ounces, with a standard.
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Twenty children with mild autism were selected from schools throughout the state of Illinois for assessment on a social skills inventory. Typical seven-year-olds have a mean score of 275 on this inventory, but autistic children will probably score lower. Given the following social inventory scores for the 20 autistic children,.
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Twenty-one mature flowers of a particular species were dissected, and the number of stamens and carpels present in each flower were counted. Is there sufficient evidence to claim a linear relationship between these two variables at a = .05? (I) Find r. (Give your answer correct to three decimal places.).
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Twelve nurses work the fourth floor at a hospital, monitoring and assisting patients. The nurses are regularly (average 1.3 times per hour each) required to access a drug dispenser on a different floor. Average time (including travel, but not including waiting) for getting drugs from the dispenser is 2.4 minutes..
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