Normal Distribution Problem: A certain component for the newly developed electronic diesel engine is considered to be defective if its diameter is less than 8 mm or greater than 10.5 mm. The distributions of the diameters of these parts is known to be normal with a mean of 9.0 mm and a standard deviation of 1.5 mm. If a component is randomly selected, what is the probability that it will be defective? Q: Do I add the Right and Left tails and that's my total probability of defectiveness? Or, Do I take the Normal.Dist (from Excel) to the left of 10.5 minus the N.D left of 8 for a total of .588852 probability that it will be defective (that's a lot)? Please help! And, thank you in advance!

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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.