(Answered) Question 1 if the manager of a paint supply store wants to

Statistics

Question: 1. If the manager of a paint supply store wants to estimate the mean amount of paint in a 1-gallon can to within ±0.004 gallon with 95% confidence and also assumes that the standard deviation is 0.02 gallon, what sample size is needed?

2. If a quality control manager wants to estimate the mean life of light bulbs to within 20 hours with 95% confidence and also assumes that the population standard deviation is 100 hours, what sample size is needed?

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