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or his PhD project, on a randomly selected day in May, Ali Cem samples 230 observations,...

or his PhD project, on a randomly selected day in May, Ali Cem samples 230 observations, from a population that is assumed to be normal, with a sample mean of 17 and a population standard deviation of 22.

  1. Determine the standard error of the mean. (Round your answer to 3 decimal places.)

b. Determine the 95% confidence interval for the population mean. (In your calculations: round your z/t value to 2 decimals, but round all other values to 3 decimals. Round your final answer to 3 decimal places.)

Math   Statistics-And-Probability   
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