Among various ethnic groups, the standard deviation of heights is known to be approximately three inches. We wish to construct a 95% confidence interval for the mean height of males from a certain country. Forty-eight males are surveyed from a particular country. The sample mean is 70 inches. The sample standard deviation is 2.6 inches.       Construct a 95% confidence interval for the population mean height of males of this country. (i) State the confidence interval. (Round your answers to two decimal places.)     ,      (ii) Sketch the graph.      (iii) Calculate the error bound. (Round your answer to two decimal places.)

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.