For two samples from what are assumed to be normally distributed populations, the sample sizes and standard deviations are n1 = 10, s1 = 23.5, n2 = 9, and s2 = 10.4. At the 0.10 level of significance, test the null hypothesis that the population variances are equal. Would your conclusion be different if the test had been conducted at the 0.05 level? At the 0.02 level?
Answer to relevant QuestionsFor two samples from what are assumed to be normally distributed populations, the sample sizes and standard deviations are n1 = 28, s1 = 103.1, n2 = 41, and s2 = 133.5. At the 0.10 level of significance, test the null ...In conducting her annual review of suppliers, a purchasing agent has collected data on a sample of orders from two of her company’s leading vendors. On average, the 24 shipments from company 1 have arrived 3.4 days after ...An industrial engineer has designed a new workstation layout that she claims will increase production efficiency. For a sample of 8 workers using the new workstation layout, the average number of units produced per hour is ...Observing a sample of 35 morning customers at a convenience store, a researcher finds their average stay in the store is 3.0 minutes, with a standard deviation of 0.9 minutes. For a sample of 43 afternoon customers, the mean ...According to the National Center for Education Statistics, 88% of elementary, middle-school, and secondaryschool students from families earning $75,000 or more per year use a computer at school, compared to 81% from families ...
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