The chefs at a local pizza chain in Cambria, California, strive to maintain the suggested size of their 15-inch pizzas. Despite their best efforts, they are unable to make every pizza exactly 15 inches in diameter. The manager has determined that the size of the pizzas is nomally distributed with a mean of 16 inches and a standard deviation of 0.8 inch. What is the expected value and the standard error of the sample mean derived from a random sample of 4 pizzas? What is the expected value and the standard error of the sample mean derived from a a. b. random sample of 16 pizzas? Compare the expected value and the standard error of the sample mean with those of an individual pizza. C.

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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.