About the time they spend per week on leisure activities

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A past study claimed that adults in America spent an average of 18 hours a week on leisure activities. A researcher wanted to test this claim. She took a sample of 12 adults and asked them about the time they spend per week on leisure activities. Their response (in hours) are as follows. 10.4 14.0 23.2 24.6 22.9 37.7 16.4 14.5 21.5 19.8 17.8 18.4 Assume that the times spent on leisure activities by all adults are normally distributed. Using the 10% significance level, can you conclude that the average amount of time spent on leisure activities has changed?

Reference no: EM131343871

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