b. Var(X + Y) > > Var(2X) c. Var(X- Y) < Var(2Y) es baniteb ai Y oldshsv mobrnss ienoibbs ns 1evonoM (dS (h.0)M aldshev mobneilemon bsbnisia d. Var(X+ Y) = Var(X- Y) Question 6.45. If E(aX + bY = 6 and SD(aX + bY) = 5, what is E(bX + aY)? a noileeup а. 4 AI b. 8 EM d С. 12 .b d. 16 Isupe al pniwollot ert to roirlW ea nodeeu Use the following information for the next 2 questions. Suppose there are two independent random variables X- N(H, o ) and Y N(H, o ), (2Y)96 and: Y)9.b P(Xs a) = P(Y< b) O = 20, 2aY209 of lsupe ei gniwollot erlt %3D doirW 08.8 noiteeu Question 6.46. What is u? а. b - а (02522.1-19 s b. 2b - a (02321-19.d с. а-b d. a- 2b (8.0 2S2 0)9. anollaoup xen od notegmatal.oniwollol erl prieU Question 6.47. Which of the following is the distribution of X+ Y? a. N(2µ, 5 o) b. N(2μ , 5σ ) c. N(H, 5 o,) d. N(H, 5 o) feunt ai pniwollot erli to rlai.te8 noileeu

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Unitary Method

The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products. 

Speed, Time, and Distance

Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.

Profit and Loss

The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.

Units and Measurements

Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.