If the point(4,-1) i a point on the graph of f, then f(_)=___
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Answer:
The expected number of days until prisoner reaches freedom is 12 days
Step-by-step explanation:
From the given information:
Let X be the random variable that denotes the number of days until the prisoner reaches freedom.
We can evaluate E(X) by calculating the doors selected, If Y be the event that the prisoner selects a door, Then;
E(X) = E( E[X|Y] )
E(X) = E [X|Y =1 ] P{Y =1} + E [X|Y =2 ] P{Y =2} + E [X|Y =3 ] P{Y =3}
Solving for E[X]; we get
E[X] = 12
Answer:
Step-by-step explanation:
the general equation for a line is:
where is the slope of the line, and
is the y-intercept.
Since we need a slope of -2/3:
,
So far we have that the line must have the equation:
the graph of a line with a negative slope is one that "falls" from left to right in the plane. And the number means that it falls at a ratio of 2 units in the y-axis for every 3 in the x-axis.
we are told that the y-intercept is that of the line:
--> here the y-intercept is -2.
Thus the equation of the line we are looking for is:
which means that this line crosses the y-axis at -2, and the graph is the one in the attached image.
