Exam 6: Modeling Random Data and Noise

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The standardized Gaussian PRNG produces Gi and the PRNG value YiY _ { i } is uniformly distributed over [0,1).If Gi and Yi\mathrm { G } _ { i } \text { and } Y _ { i } are independent, what is the mean and variance of Zi=2Gi+4Yi1Z _ { i } = 2 G _ { i } + 4 Y _ { i } - 1

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2Gi2 \mathrm { G } _ { i } has mean 0 and variance  4. 4Yi\text { 4. } 4 \mathrm { Y } _ { i } has mean 4(0.5)=2 and variance 16(1/12)=4/3. Adding 116 ^ { * } ( 1 / 12 ) = 4 / 3 \text {. Adding } - 1 gives μz=1 and σz2=4+4/3=16/3\mu _ { z } = 1 \text { and } \sigma _ { z } ^ { 2 } = 4 + 4 / 3 = 16 / 3

The RV Z is uniformly distributed between -0.15 and 0.35 .What is the amplitude of PDF pz(x)p _ { z } ( x ) that makes the area under the curve equal to 1.

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 Extent =0.5>pz(x)=2 for 0.15x<0.35\text { Extent } = 0.5 - > p _ { z } ( x ) = 2 \text { for } - 0.15 \leq x < 0.35

The standardized Gaussian PRNG produces Gi .What is the mean and variance of Zi=2Gi+3Z _ { i } = 2 G _ { i } + 3

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2Gi2 G _ { i } has mean 0 and variance 4.Adding 3 gives μz=3 and σz2=4\mu _ { z } = 3 \text { and } \sigma _ { z } ^ { 2 } = 4

The probability that the RV Y that is uniformly distributed over [0,1) produces values that lie in the range [0.1, 0.5] equals _____.

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An experiment with RV X produces three possible values 0, 1 and 2.If the probability P[X=0]=0.4P [ X = 0 ] = 0.4 and P[X=1]=0.3,P[X=2]=______P [ X = 1 ] = 0.3 , P [ X = 2 ] =\_\_\_\_\_\_

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The standardized Gaussian PRNG produces Gi and If G1 and G2 are independent standardized Gaussian RVs and Z=2G1+3G2\mathrm { Z } = 2 \mathrm { G } 1 + 3 \mathrm { G } 2 the value of the variance of P equals______.

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The PRNG value Yiis uniformly distributed over [0,1).The value Zi=2Yi+3Z _ { i } = 2 Y _ { i } + 3 is uniformly distributed over what range?

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For the RV Z that is uniformly distributed between -2 and 4, the mean μz=______\mu _ { z } =\_\_\_\_\_\_

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When performing 10 experiments the RV X produces the following realizations:2, 1, -1, 0, 3, 5, -1, 2, 0, 1 Ave(X) = _____ and Var(X) = _____.

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