The mean length for the population of all screws being produced by a certain factory is targeted to be 5 centimeters. assume that you don't know what the population standard deviation is. you draw a sample of 25 screws and calculate their mean length. the mean for your sample is 4.8, and the standard deviation of your sample is 0.4 centimeters. what is the 90% confidence interval for the population mean? round your answer to two decimal places.

Np4=12np2 with clear explanation.

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An empty bucket is placed under a faucet dripping at a constant rate of 4 milliliters per minute. with the given information, which of these statements is a reasonable conclusion? a there will be 24 milliliters of water in the bucket after 16 hour. b there will be 60 milliliters of water in the bucket after 14 hour. c there will be 160 milliliters of water in the bucket after 20 minutes. d there will be 100 milliliters of water in the bucket after 40 minutes.