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Below are the data collected from two random samples of 500 American adults on the number of hours they spend doing leisure and sports activities per day (rounded to the nearest hour):Number of hours spent doing leisure and sports activities per day 1 2 3 4 5Sample A: Number of adults 70 90 135 140 65Sample B: Number of adults 80 80 130 135 75Dan concludes that adults spend a mean of 3 hours each day doing leisure and sports activities. Bret thinks the mean is 4 hours. Who is correct—Dan or Bret? Explain your answer in two or three sentences.

Sagot :

Dan is correct, because if you spend a mean of 3 hours each day doing leisure and sports activities, you have to add people that spend 4 and 5 Hours and verify that addition will be more than 51% of 500 people (250) and it its the case, adding 340 for both samples.

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