. 19. For two groups of observations, the fóllowing results are available :E(X – 5) = 3Group II 2(X- 8) = – 11Group 1E(X – 5) = 43E(X - 8) = 76N = 18N2 = 17ed the mean and standard deviation of 35 observations obtained by combining the two groups.

Mean of a dataset is computed by dividing the sum of observations by the total number of…

Answered: . 19. For two groups of observations,…

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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In my last question, the formular for a & b is correct, however, the same formular for c is not...The difference should be "20" but I'm not sure why this isn't calculating to "20". Here's the question: A random sample of 24 items is drawn from a population whose standard deviation is unknown. The sample mean is x¯ = 880 and the sample standard deviation is s = 5. (c) Construct an interval estimate of μ with 99% confidence, assuming that s = 20. =880-20/SQRT(24)*2.81 = 868.528 =880+20/SQRT(24)*2.81 = 891.472
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. 19. For two groups of observations, the röllowing results are available : E(X - 5) = 3 Group II 2(X- 8) = - 11 Group 1 E(X – 5)? = 43 N = 18 E(X – 8)² = 76 N2 = 17 d the mean and standard deviation of 35 observations obtained by combining the two groups.