Eight different families are tested for the number gallons of water a day they use before...

Eight different families are tested for the number gallons of water a day they use before and after viewing a conservation video. Information is given below. Do you believe that the conservation video is helpful to save daily water usage? Explain your answer using both confidence interval method and hypothesis test method.

before

after

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Expert Solution

according to hypothesis testing methods null hypothesis is not rejected it means that there is not sufficient evidence that mean difference has decreased.in other words we can say that there is not sufficient evidence to say that conservation video is helpful to save daily water usage.

and confidence interval also contains positive values. so we cannot say that mean difference has decreased or there is not sufficient evidence to conclude that conservation video is helpful to save daily water usage.

please like ??

orchestra answered 1 year ago

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