Students in Mr Brawn's exercise class have to do press-ups and sit-ups. The number ofpress-ups x and the number of sit-ups y done by a random sample of 8 students are summarisedbelow.Σχy = 11 222,Σε = 272,Σy = 320,Σχ" = 10 164,Σy = 13 464.The addition of the mean and standard deviation of the number of press-upsdone by these students, is(A) 44(B) 44.07(C) 44.70(D)None of these* Q3

Given information:Let, X denotes the number of press-upsY denotes the number of sit-upsFor a sample…

Answered: Students in Mr Brawn's exercise class…

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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A standardized exam's scores are normally distributed. In a recent year, the mean test score was 1544 and the standard deviation was 314.The test scores of four students selected at random are 1940, 1290, 2250,and 1420.Find the z-scores that correspond to each value and determine whether any of the values are unusual. (Round to 2 decimal places as needed.)
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