ALL ABOUT STATISTIC

Instruction: Read and analyze the following situations and supply the values of the following variable in the second column. Determine whether the following statements have a known or unknown population variance and provide a brief explanation to support your answer. Also, identify the formula to be used for the standard error of the mean by writing or, when the population variance is known and s, when the population variance is unknown. Situation Given Answer Standard Error Formula 1. Consider a population consisting of 15, 2, |N =_ 12, 4, 5, 8,6, 9 and 17. Samples of size 5 n = are drawn from this population. 2. Given the population mean of 98, and a | n = sample standard deviation 2 in a sample size of 45. S= 3. A population composed of 10 items whose N = measurements are 12,11, 15, 8, 20, 23, n = 18, 13, 22, and 10. Samples of 6 items are drawn at random without replacement