Question

1. Children’s weekly water consumption (X, in liters) is a variable that is normally distributed with dispersion σ = 3.5. In a simple random sample of 45 children, the weekly average consumption of water is 17.72 liters. a. Obtain a confidence interval (90%) for the expected consumption. b. If water consumption is not normally distributed, what happens with the confidence interval? c. Determine the minimum sample size to estimate the expected consumption with a margin of error of 1 liter and a confidence level of 95%

Answer 1

Answer:

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