The mean of the difference data (attached) is x bar = 8.95 with a standard deviation SD = 23.88. 1. Find a 99% confidence interval for the mean difference (scented –unscented) in improvement in completion times. 2. Provide an interpretation of this interval in the context of possible extra improvement with floral scent.

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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.