Mathematics, 22.11.2019 01:31 smusisca53
Heavy children: are children heavier now than they were in the past? the national health and nutrition examination survey (nhanes) taken between 1999 and 2002 reported that the mean weight of six-year-old girls in the united states was 49.3 pounds. another nhanes survey, published in 2008, reported that a sample of 190 six-year-old girls weighed between 2003 and 2006 had an average weight of 46 pounds. assume the population standard deviation is =σ17 pounds. can you conclude that the mean weight of six-year-old girls in 2006 is different from what it was in 2002? use the =α0.10 level of significance and the critical value method.
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Can someone answer it, and plot it, for 20 points and brainliest answer? p.s. they're the same ! : )
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