SAREX My Work simple random sample of 60 items resulted in a sample mean of 79. The population standard deviation is 13. Compute the 95% confidence interval for the population mean (to 1 decimal). Ⓡ Assume that the same sample mean was obtained from a sample of 120 items. Provide a 95% confidence interval for the population mean (to 2 decimals). What is the effect of a larger sample size on the margin of error? It decreases

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