Suppose I want to know if violent video games cause young people to behave aggressively. Answer what type of data the study is for the following three scenarios. Walmart wants to investigate the question. They compare the identity of their violent and nonviolent game purchasers through credit card information. They compare the arrest records of both groups in their counties in the subsequent 3 years after purchase. Available data Experimental data O Sample data

Q: Find AB.

A: Let  A=210-3-70-24 and B=4-2011-2005-3-10 The order of a matrix is number of rows× number of…

Q: When might you use one or the other?

A: Generally, both covariance and correlation are used to know about the linear relationship between…

Q: A-1 does not exist.

A:

Q: Evaluate. ((-1) -4) +5-(-2)

A: Use the BODMAS rule to evaluate the given expression. −12−43+5⋅−2First solve the terms in the…

Q: (22) Let A = (-∞, -2] and B = (102, ∞).

A: Given A=(-∞, -2] , B=(102, ∞). Now, the union of two sets consists all those elements that belong to…

Q: he answer is still wrong

A: Sol:-We need to use Bayes' theorem to calculate this probability.  Let A be the event that Stage 3…

Q: Find X ,Y and Z

A:

Q: (d) 1 0, 元”V元”V元 4 an =

A:

Q: Find the rank of A = ( 1   -1   2   3)                                       2  6  -8   1…

A: Rank of Matrix : It is the Number of Non Zero rows in reduced row echelon form.

Q: There isn't anything there

A: Given function isfz=zzIt is proved that fz is conformal as shown below.

Q: Find A. A = (3A)-1 · [ = 10 4 21

A: We have to find A using given data.

Q: y X (9, –3)

A:

Q: The answer

A: We are asked to find the increase in cost if the production level is raised from 1200 units to 1800…

Q: -8 - 12

A: Given problem is

Q: Evaluate. (3- 5)² + 4(1 – 5)

A: Given, (3-5)2 + 4(1-5)

Q: 10 B 14 A

A: The Pythagoras theorem states Hypotenuse2=base2+perpendicular2.

Q: x²+x 7. Evaluate , S, xdydx . -1 J2x²-2

A:

Q: Do.! (9, - 6)=(

A:

Q: 6c-8-2c= -16

A:

Q: Simplify. (4y²– 2y-3)+(3y²–5y-4)-(8)²-4y-8)

A: Given :

Q: r5 dt 25 + t2

A:

Q: How are r and r2 interpreted?

A: In this question, we have to explain how we interpret r and r2

Q: Could you explain (b) as well?

A: We have to prove the following proofs:(i)rank(AB)<=min{rank…

Q: .2 y = 4 - x² and x +y = 2.

A:

Q: 7 -4 -4 -3 5 6 2 1. а. -28 16 с. -28 16 -4 12 0 - 20 12 -4 -20 -24 -8 -4 -24 -8 -4 b. 3 -8 -4 d. -4…

A:

Q: Everything was right except for C

A: As you said I am solving part C

Q: (6,8),(7,7),(9,8),(12,11) find the value of r and round to four decimal places.

A:

Q: (vii) at least one of the car (viii) none of the car.

A: