A manufacturer makes thousands of ballpoint pens per day, and estimates that 3% are defective and must be discarded. The manufacturer decides to do a random sample of 350 pens per day to check for quality control. a. Find the probability that at least 10 of the sampled pens are defective. b. Let x represent the no. of defective pens in a sample of 350 pens. Compute the mean and standard deviation for x. Show the formulas used and all work. Round to one decimal place.

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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.