The standard deviation of X, denoted SD(X), is given by SD(X)% = Var(X). Find SD(aX + b) if X has variance %3D of a?.

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A: The joint pdf of X and Y is given by  fx,y=2             0≤x≤x≤10              otherwise

Q: 3. z - 2.79 4. z - 1.66 5. z = 0.12

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Q: What is the probability of getting an even when you roll a die?    a. 1/3   b. ½   c. ¼

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Q: ii. Using the z-table, find the area and sketch the normal curve of the following. Show your…

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A: Givensample size(n)=375x=266p^=xn=266375=0.7093confidence interval = 95%

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A: We have given that p = 63.25% = 0.6325 n = 245

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Q: (b) Use rules of variance to obtain an expression for the variance and standard deviation (standard…

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