Mathematics, 29.03.2021 19:00 kaykay9243
Ten years ago, the average amount of time a family spent eating supper together was 27.8 minutes. A sociologist believes this average has decreased. She randomly selects a sample of 12 families and finds the sample average to be 24.307 minutes. The sample data look about bell-shaped. She calculated a test statistic of t
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Ten years ago, the average amount of time a family spent eating supper together was 27.8 minutes. A...
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