Average consumption of water per day


The Water and Juices store stated that the average consumption of water per day was 123 gallons. To test the hypothesis that this figure may no longer be true, a researcher randomly selected 150 people and found that they used on average 119 gallons per day and s=10. At α = .01, is there enough evidence to say that their statement might no longer be correct?

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Basic Statistics: Average consumption of water per day
Reference No:- TGS0119501

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