In a manufacturing process that laminates several ceramic layers, 1.9% of the assemblies are defective. Assume the assemblies are independent. (a) What is the mean number of assemblies that need to be checked to obtain 4 defective assemblies? (b) What is the standard deviation of the number of assemblies that need to be checked to obtain 4 defective assemblies? (a) The mean number of assemblies is i [Round your answer to the nearest integer.] (b) The standard deviation of the number of assemblies is i [Round your answer to two decimal places (e.g. 98.76).]

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Average

In mathematics, everyone must have heard the term average in one place or other. Almost all types of calculation require taking out an average. In everyday life, the term is used for denoting a certain amount that can be said to be a typical quantity for multiple people or objects. In other words, if a group of people possesses a certain object, then the average gives us an idea regarding the quantity of the object possessed by each person. However, this is solely based on mathematical calculation. It is important to note that most people will not strictly have the average value in a group.