The tensile adhesion of each of 20 randomly selected specimens of a metal tested. The resulting measurements (in megapascals). Use them to calculate a 90% condence interval for the true mean tensile adhesion strength of the metal. tensile adhesion of 20 specimens: 11.4   11.9    13.6     8.8     19.5 15.8   16.7    17.6     14.1    11.4 11.9   12.7      7.9     18.5    15.4 15.4    7.5     14.9     10.1    19.8 Using Excel, Total sum of 20 specimen measurements= 274.9 Average = 13.745 Use the given amounts to find the 90% confidence interval of the true mean.

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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.