A century ago, the average height of adult women in the United States was 63 inches. Researchers believe that the average might be greater today. A random sample of 40 adult women was selected from the population. The sample had mean 64.2 inches and standard deviation 2.9 inches. Assuming all conditions for inference are met, the researchers will perform an appropriate hypothesis test to investigate their belief.  Which of the following is the correct test statistic for the hypothesis test? a) t= 63-64.2/2.9 b) t= 63-64.2/2.9/ sqrt 39 c) t= 63-64.2/2.9/ sqrt 40 d)t= 64.2-63/2.9/ sqrt 39 e) t= 64.2-63/2.9/sqrt 40

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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.