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Mamont248 [21]
3 years ago
11

Suppose that 0.9% of male professional golfers use steroids, and that Max is a male professional golfer who has been randomly se

lected to take a drug test. The test he has been asked to take has a false positive rate of 1% and a false negative rate of 10%.
Mathematics
1 answer:
marishachu [46]3 years ago
6 0

Answer:

0.4490

Step-by-step explanation:

P(tested positive )=P(uses steroid and tested positive )+P(not uses steroid and tested positive )

=0.009*0.9+0.994*0.01=0.01804    

Therefore:

Therefore P(uses steroid|tested positive )=P(tested positive & uses steroid)/P(tested positive )=0.009×0.9/0.01804=0.4490

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3 years ago
I don’t understand this question. Can anyone help? I need answers ASAP. Thanks for all the help
zavuch27 [327]

There's some unknown (but derivable) system of equations being modeled by the two lines in the given graph. (But we don't care what equations make up these lines.)

There's no solution to this particular system because the two lines are parallel.

How do we know they're parallel? Parallel lines have the same slope, and we can easily calculate the slope of these lines.

The line on the left passes through the points (-1, 0) and (0, -2), so it has slope

(-2 - 0)/(0 - (-1)) = -2/1 = -2

The line on the right passes through (0, 2) and (1, 0), so its slope is

(0 - 2)/(1 - 0) = -2/1 = -2

The slopes are equal, so the lines are parallel.

Why does this mean there is no solution? Graphically, a solution to the system is represented by an intersection of the lines. Parallel lines never intersect, so there is no solution.

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3 years ago
1-3. Find the center point, the radius and the diameter for the following equation: x² + y2 = 16
kogti [31]

Answer:

Center: (0, 0)

Radius: 4

Step-by-step explanation:

Circle Standard Equation: (x - h)² + (y - k)² = r²

(h, k) is center

r is radius

We see that our <em>h</em> and our <em>k</em> are both 0.

∴ Our center is (0, 0), origin.

We see that our r² = 16

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padilas [110]

Answer:

if EG || HJ,

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Step-by-step explanation:

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I believe it is 68
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3 years ago
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