A standardized exam's scores are normally distributed. In a recent year, the mean test score was 1480 and the standard deviation was 310. The test scores of four students selected at random are 1880, 1240, 2200, and 1380. Find the z-scores that correspond to each value and determine whether any of the values are unusual. The z-score for 1880 is (Round to two decimal places as needed.) The z-score for 1240 is (Round to two decimal places as needed.) The z-score for 2200 is (Round to two decimal places as needed.) The z-score for 1380 is

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A: Hey, since there are multiple subparts posted, we will answer first question. If you want any…

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A: e) -1+ is greater than -1, so we will take the second piece of the function

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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.