Answer:
For X, the parameter
is λX = 1/2 and for Y it is λY = 1. Using the formula sheet, Mean is
E[Z] = E[X] + 2E[Y ] = 4. Variance is V ar(Z) = V ar(X) + 4V ar(Y ) = 8.
Answer:
The following triangle is equilateral triangle. Solve for the
unknown variable. y=17 is the answer
think of it as half a circle which all equals up to 180 degrees
subtract 180 degrees with 62 degrees which 62 degrees is in the problem.
180-62=118 degrees
so your answer is C) 118 degrees
hope that helped you out:)
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