1.Random sample of size 36 were drawn with replacement from a popolation with mean and variance 0.9, and in each case the sample mean was calculated. Find the variance of X. 2.Random sample of size 9 were drawn with replacement from a popolation with mean and variance 4.2, and in each case the sample mean was calculated. Find the variance of X. 3. Random samples of size 10 are drawn with replacement from a population with mean 4 and variance 6. Let X be the sample mean. Find E(X) and Variance(X).

Q: 1. Suppose that X1 and X2 are random variables with zero mean and unit variance. If the correlation…

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Q: 4. Suppose the variance of X is 2.0091. Which of the following is(are) TRUE? L In the long run, the…

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Q: 1. Suppose that X1 and X2 are random variables with zero mean and unit variance. If the correlation…

A: Hi, thanks for the question. Since there are multiple questions posted in the question, we will…

Q: Question 3.  Two samples of sizes 15 and 16 are drawn from two normally distributed populations…

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Q: random sample of n = 16 scores is obtained from a population with a mean of μ = 80, and a treatment…

A: Given data,  n = 16 μ = 80 M = 82 s 2 = 1600 s=40 what is the estimated d?

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Q: Consider following artificial population Y X Compute variance of mean per unit, ratio and regression…

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Q: 4. Suppose the variance of X is 2.0091. Which of the following is(are) TRUE? I. In the long run, the…

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Q: 21. To create the following data we started with the same sample means and variances that appeared…

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A: NOW HERE GIVEN   N1=7, S12 = 142 AND  N2=7, S22= 110

Q: Suppose that X and Y are unknowns with E(X) = 10, Var (X) = 4, E(Y)=12 and Var (Y) = 100. In…

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Q: One sample has SS = 48 and a second sample has SS = 42. Now assume that n = 4 for the first sample…

A: We have given that,  For first sample :- SS1 = 48, n1 = 4 and  SS2 = 42, n2 = 8 Then,  We will find…

Q: P(X>40)=P(X<           ). - fill in blank space  1.2 Calculate the percentage of the data that is…

A: Given: X~N(30, 82 ) μ = 30 σ = 8 Formula Used: Z-score = X-μσ X = μ+Z×σ

Q: 6. Find the variance if X~N(0, ¿) and 95% of the data are between -7 and 7.

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Q: - If the random variable X from a distribution with mean 70 and variance 9 find the mean and…

A: Given :-   EX = 70VarX = 9And ,   Y =-2X+5and , Z=X-703   we have to find EY , VarY and EZ , VarZ…

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A: Given  n1=13, X1bar=1.12, S1=0.52 n2=15, X2bar=1.49, S2=0.70

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.