A sporting equipment company manufactures 15 pond dumbbells .To ensure that the production line is functioning properly , 50 dumbbells were selected at random , and their weight were recorded .The observed sample mean weight of the 50 dumbbells was 16.87 lb and the observed sample standard deviation was 1.44 lb.       A Construct a 90% confidence interval for the mean of the distribution of the weight of the manufactured dumbbells

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Q: Construct a 90% Confidence Interval for the mean.

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Q: company manufactures a certain over-the-counter drug. The company samples 80 pills and finds that…

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Q: Find a 99% confidence interval for the mean of weights of Siamese cats if the population standard…

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