Mathematics, 05.05.2020 07:19 rosepederson80

The water department check the city water supply on a regular basis for contaminants such as trihalomethanes (THMs). The water department takes 200 samples and estimates the concentration of THMS in your drinking water is 3PPB (parts per billion), with a standard deviation of 0.3 PPB

assuming the samples are random and unbiased how much confidence can you have in this data

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The water department check the city water supply on a regular basis for contaminants such as trihalo...