You are told E(X) = 4, V(X) = 10, E(Y) = 6, V(Y) = 20 and cov(X, Y) = -3. Calculate E( 2 X-7Y) (1 decimal place) Answer:

Q: (c) y = 2

A:

Q: How did u get v(x)=14.4? My calculator say its -361.4625?

A: The variance is never negative and it cannot be -361.4625. From previous parts the marginal…

Q: f ​P(E)=0.60​, ​P(E or ​F)=0.65​, and​ P(E and ​F)=0.10​, find​ P(F).

A: Let E and F are two events. The known probabilities are, ​P(E)=0.60​, ​P(E or ​F)=0.65​, P(E and…

Q: Iny y10 (b) S S dy

A: The given integral is:∫ln yy10 dy

Q: o(E)=3:2, find p(E)

A: Odds of E (3/2) And we have to find p(E) =?

Q: Under certain conditions, the power P, in watts per hour, generated by a windmill with winds…

A: An algebraic expression is obtained by combining numbers and variables together with arithmetic…

Q: dx Vi – 2r

A:

Q: x(t) = ?

A: Given: x'=3-22-2x+12e-t comparing this by  x'=Ax+b The homogeneous solution:…

Q: Find f (VF + xJ dx

A:

Q: Let X = b(n, and E(3x) = E(3-5x) find n.

A: If X~ B(n,1/2) We know that, Mean, E(X) of binomial distribution is given by np So  E(X)= np = n/2

Q: 6. Find (x + 3y)dA where D = {(x, y) | æ² + y 0}

A:

Q: E (x+1) xp:

A: Given integral is, ∫x+112x52dx.   It is integrated as follows:   Apply u-substitution: u=x+112…

Q: f(x) = x O A. -2 O B.

A: None of the options are correct, correct solution is given below

Q: If ​P(E)=0.55​, ​P(E or ​F)=0.70​, and​ P(E and ​F)=0.20​, find​ P(F).

A: Given that P(E)=0.55​, ​P(E or ​F)=0.70​, P(E and ​F)=0.20​ The formula of addition of two events…

Q: Show that A (B × ℃) is not equal to B · (À × ℃)

A:

Q: dx 3— 2л — т2

A:

Q: Solve for y: x=2y+1/3y-3 y=

A: Given equation is

Q: P(E)=0.60​, ​P(E or ​F)=0.85​, and​ P(E and ​F)=0.05​, find​ P(F).

A: Given : P(E)=0.60​ ​P(E or ​F)=0.85​ P(E and F)=0.05​

Q: d.r. , (- 1) 1,

A:

Q: A. Solve dy (1+x+) dx

A: We have to find the solution

Q: Find y 1f y=X in (4x+1)

A:

Q: Simplify the following expression. dt dx 2+1 dt .2 dx t +1 0.

A: In the given problem first we integrate the given integrand and  then differentiate the integral .

Q: dy (b) +7• y= ÷; y (0) = 1 dr The answer is y

A:

Q: The following data were used in a regression study. Observation 1 2 3 4 5 6 7 8 9 xi 2 3 4 5 7 7 7 8…

A: Answer:-

Q: f(-1,–5)= f(-5,–1)= f(0, 0)= f(5, –5)= f(t, 2t)= f(uu, и — v)-

A:

Q: +299 dx -1 Select one: а. 299 300 b. 1 C. 0 1 d. 300

A: We have to find the integration of the given function.   This problem can be solved by using power…

Q: Y (t)

A: