If the variance of the sum is Var(X+Y) = 6 and Var(X) = Var(Y) = 4, then what is the correlation between X and Y? Corr= (Type an integer or a decimal.)

Q: please explain this 7.2-8.12.5/24)= please brake this down step by step so i know how to get the…

A: From given data we have ; mean μ=8.1 standard deviation σ=2.5 sample size n=24

Q: 1m (formula = Income ~ Hours + HighTemp + Hours * HighTemp) Residuals: Min 1Q Median 3Q Max -68.110…

A: The model is given by,  Salesi= β0 + β1*Hoursi + β2*HighTempi + β3*(Hoursi*HighTempi) + εi Then the…

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Q: d. Present major regression summary outputs for both regression lines showing: regression…

A: GDP Inflation Unemployment 6.24 17.47 9.9 6.99 14.33 10.4 8.14 11.63 9.9 7.76 15.18 11.1…

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A: given data,we have to find out the critical value the given data

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A: The data shows best actress and best actors winner.

Q: (a) Σ Ixi-yil m (b) (m) (c) π 3 yi уі

A: a) The calculations are made in the following table x y x-y |x-y| 3 -10 13 13 -2 3 -5 5 5 4…

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Q: The probability that you will get an A grade in Quantitative methods is 0.7.The probability that you…

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Q: May I know the Q5 and the process

A: Solution-: Given data: 55,46,63,57,61,65,96,55,74,32,67,59 We want to find, (a) Mode=? (b) Give the…

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A: We have given the following joint p.d.f of two random variable x and y f(x,y) = 1/8[ x(x-y) ], 0&lt;…

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A: From the above graph we can see that, it is symmetric the mean =median= mode= 20 i.e. mid point of…

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A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Assume the random variable X is normally distributed with mean μ = 50 and standard deviation o=7.…

A: given data, normal distribution, μ=50σ=7p(35&lt;X&lt;63)=?

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Q: Express the confidence interval (0.018,0.092) in the form of p-E<p<p+E. 0.018 <p < 0.092 (Type…

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Q: A traffic safety company publishes reports about motorcycle fatalities and helmet use. the first…

A: From given data we have ; Location of Injury Probability  Frequency Multiple  0.570 1021 Head…

Q: Suppose you ran the following regression and found this statistically significant result: AGE =…

A: Given: AGE = 120 + -4*HEALTH  X= 120 +(-4) Y HEALTH is a rating on how healthy they are, from 1…

Q: Find the value of Za α = 0.31 The value of 20.31 is (Round to two decimal places as needed.)

A: given data  we have to find Zα = ? α = 0.31 here standard normal distribution Z~N(0,1)

Q: .If X&Y are independent R.V's,what are the values of Var(X₁+X₂)and Var(X₁-X₂)

A: Solution X1 and X2 are independent random variables then Cov(X1,X2)= Then Var(X1+X2)=Var(X1)+Var(X2)

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A: Given: Night students: n1 = 30 X1 = 2.8 s1 = 0.06 Day students: n2 = 30 X2 = 2.78 s2 = 0.07 Formula…

Q: 7.Find the value of k if f (x, y) = k(1- x)(1- y) for0 < x, y < 1 is to be joint density function.

A: We have given that f(x,y) = k(1 - x)(1 - y) , for 0 &lt; x , y &lt;1

Q: A croissant shop produces two products: bear claws (B) and almond-filled croissants (C). Each bear…

A: by bartleby policy i can gives only 3 subparts answers at a time   Suppose, number of bear claws…

Q: The hourly wages of a sample of 130 general workers are given below: mean = 60 range = 20 The…

A: Coefficient of variation calculated in Percentage.

Q: X is a continuous uniformly distributed random variable from -10 to 10. Find probability density…

A: Dear student, If you find this solution helpful please upvote it. The solution is given below :

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A: Given:-               Total user in 2017  =  987              Increase rate  = 15 %…

Q: The top portion of the Pearson's r correlation coefficient equation calculates the______ whereas the…

A: Method: Correlation coefficient shows that the relationship between the two variables X and Y.

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A: Given that, The temperatures in degrees Fahrenheit in Denver for five days in July are given as:…

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A: Given is a question based on the definition of standard error.

Q: Given that X is uniformly distributed in the range [1, 3] and Y = X2, what is the PDF of the random…

A: Given that, X follow uniform distribution in the range (1,3) and Y=X2 We have to find the pdf of Y.

Q: A random sample X₁, X2, X3, ..., X100 is given from a distribution with known varianc Var (X₂) = 81.…

A: Given: random sample X1, X2, X3, . . , X100 is given from a distribution with known variance Var(Xi)…

Q: You conducted an independent-groups experiment on two groups of laboratory rats, each containing 14…

A: GIven, You conducted an independent-group experiment on two groups of laboratory rats, each…

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A: From the given options only third point is true a s per the point estimation. So option 3(iii only )…

Q: Use the standard normal table to find the z-score that corresponds to the given percentile. If the…

A: Given probability is P(Z&lt;z0)=0.33

Q: IQ is known to be normally distributed with a mean of 100 and standard deviation of 16.  A small…

A: given data claim : μ= 100σ = 16n = 79x¯ = 97

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A: 3 sugar cookies4 chocolate cookies5 peanut butters cookies_______________12 total cookiesselect 2 at…

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A: Nominal level measures are the measures which doesn't use any quantitative value. Here option D and…

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A: Given data: Before After 22 20 25 19 15 10 28 12 13 11 16 8 15 10 12 9

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A: Given: n = 2508 The margin of error E = 2.1 Formula Used: σ = EnZ

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A: The given hypothesis is H0:p1=p2 Versus Ha:p1≠p2.

Q: bAn article wanted to look at the compression strength of aluminum cans filled with strawberry drink…

A: Given data: Strawberry drink: Sample size n1=15 Sample mean x¯1=540 Sample standard deviation s1=21…