Suppose that X represents for the number of fishes caught on a certain day at a Michigan lake, and there is no available information whether a visitor fished or not. Note that X only takes nonnegative integet values, i. e. XE X = {0,1,2,...}. There are two situations when X = 0 occurs: X always takes zero value either for some visitors who do not fish (G1); or some visitors who did fish (G2) but did not catch any fish. Assume that the number of fishes in G, follow a standard Poisson distribution with parameter 1, and let O be the probability that a visitor from Gj. Find the pmf of X.

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Step-by-step explanation:

if the eqn of the parabola is f(x) = (x-4)(x+2), we need to mult. this out to find the coordinates of the vertex.

then f(x) = x^2 + 2x - 4x - 8, and f(x) = x^2 - 2x - 8.

one way in which you can find the vertex is to calculate x = -b / (2a).   here, that comes to

        )

x = = 1.   f(1) = 1^2 - 2(1) - 8 = - 9.   vertex is at (1, -9).

        2(1) 

find another point on the curve:   let x=0, for which y=-8.   then (0, -8) is on the curve.   plot the vertex and this point and draw a smooth parabola thru both.

hope this

11

step-by-step explanation:

32.50-7.50=25

225/25=11