Question
Media Metrix and Jupiter Communications collected data on the amount of time spent connected to the Internet, per month, by adults and youth (USA Today,
Media Metrix and Jupiter Communications collected data on the amount of time spent connected to the Internet, per month, by adults and youth (USA Today, September 14, 2000). It was concluded that, on average, adults spend more time connected to the Internet than young people. Suppose that to confirm this another study is carried out for which a sample of 26 adults and another of 30 young people is taken. The standard deviations from the amounts of time spent connected to the Internet are 94 and 58 minutes, respectively. Do these sample results support the conclusion that in the case of adults the variance of the time they spend connected to the Internet is greater than in the case of young people? Use = 0.01. What is the p-value?
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