Let x be the random variable whose probability mass function is the following: f(x) = ( c/3 x , if x = 1, 2, 3, . . 0, otherwise find p(3 ≤ x < 7)

The answer of P(3 ≤ X < 7) is 0.367

Step-by-step explanation:

Note that £fx= 1 in a probability mass function the sum of the function is equal to 1.

See attached picture for solution.

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step-by-step explanation:

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions