The mean weight of luggage checked by a randomly selected tourist-class passenger flying between two cities on a certain airline is 40 lb. and the standard deviation is 10 lb. The mean and standard deviation for a business-class passenger are 30 lb. and 6 lb, respectively.a. If there are 12 business-class passengers and 50 tourist-class passengers on a particular flight, what are the expected value of total luggage weight and the standard deviation of total luggage weight?b. If the individual luggage weights are independent, normally distributed rv’s, what is the probability that total luggage weight is at most 2500 lb?

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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.