Suppose that a person working as a programmer would like to estimate the mean amount of time it will take to code a problem so that it will be part of an online statistics course. The coder has to code many problems, so she would like to determine if she will have enough time to finish her work before t project deadline. (Use a table or SALT.) A USE SALT (a) Suppose that it takes the coder between 10 minutes and 22 minutes to code a problem. Calculate the minimum sample size needed to estimate the population mean with a margin of error of no more than 4 minutes with 90% confidence. problems (b) Suppose that it takes the coder between 10 minutes and 22 minutes to code a problem. Calculate the minimum sample size needed to estimate the population mean with a margin of error of no more than 2 minutes with 90% confidence. problems (c) Suppose that it takes the coder between 10 minutes and 22 minutes to code a problem. Calculate the minimum sample size needed to estimate the population mean with a margin of error of no more than 1 minute with 90% confidence. problems

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