Through the data in the table, find the variance and standard deviation of the estimated parameters alpha and beta a b y2x2Y X XYyearxy y63.2 1.87 982 205 449-31-14 99.3 19.35.68 1992747178364-27-136.72 1993747 205 392-27-14572 1994499 87.1208-22-9.31077 1995336 178 244-18-13681 199613.4 1.78 4.9 3.67-1.318 103 19971003 215 464 31.7 14.734 131 19982085 659 1172 45.7 25.745 145 19992085 659 1172 45.7 25.745 145 20008498 2388 4462Total

Answered: variance and standard deviation of the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The largest error occurs when p =
A standardized exam's scores are normally distributed. In a recent year, the mean test score was 1522 and the standard deviation was 311. The test scores of four students selected at random are 1950, 1260, 2190, and 1410. Find the z-scores that correspond to each value and determine whether any of the values are unusual. The z-score for 1950 is. (Round to two decimal places as needed.)
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A standardized exam's scores are normally distributed. In a recent year, the mean test score was 1458 and the standard deviation was 312. The test scores of four students selected at random are 1860, 1220, 2150, and 1340. Find the z-scores that correspond to each value and determine whether any of the values are unusual. The z-score for 1860 is (Round to two decimal plaes as needed.)
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