The results of a common standardized test used in psychology research is designed so that the population mean is 100 and the standard deviation is 20. A subject earns a score of 86. What is the z-score for this raw score? z-score =

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A: Given: μ = 130 σ = 4 Formula Used: Z-score = X-μσ

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Q: 12345 1. 3. 4. 5. z- or t-computed value 1.310 2.240 1.960 1.431 2.523 z- or t-critical value 1.960…

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A: EX=∫X*g(X)dX=∫01X2XX+13dX=∫2X2X+13dX=∫2X3+2X23dX=2X4401+23X3301=12+29=0.722…

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