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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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kaheart [24]

x ,y are the numbers

x = 5y-3

x+y = 27

substitute first equation into the second

(5y-3) +y =27

combine like terms

6y-3=27

add 3 to each side

6y=30

divide by 6

y=5

x = 5y-3

x=5*5-3

x=22

the two numbers are 22 and 5


5 0
3 years ago
Write a linear function f withe the values f (10) = 5 and f (2) = -3​
MakcuM [25]

Answer:

(a) f(x)=\frac{1}{2}x

(b)f(x)=-\frac{3}{2}x

Step-by-step explanation:

8 0
2 years ago
How can you tell Is something is a unit rate
ArbitrLikvidat [17]

Unit rate is a ratio between two different units with a denominator of one. When we divide a fraction's numerator by its denominator, the result is a value in decimal form. For example: 8/4 = 2 and 3/6 = 0.5. When we write numbers in decimal form, we can write them as a ratio with one as the denominator.

For example, we can write 2 as 2/1, and 0.5 as 0.5/1. However, since that approach can be a little clumsy, we usually drop the one. That said, it's important to remember the one is there, especially when working with unit rates.

For instance, 8 miles/4 hours = 2 miles/hour. Notice again that, while we did not include the 1, we did include the unit 'hour' Miles per hour is a familiar expression, as are unit rates such as:

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Conversationally, the word ''per'' indicates we are using a unit rate.

4 0
3 years ago
A video game requires at least 4 points to advance. Each solved puzzle is worth two points. Each solved riddle is worth 1 point.
Gwar [14]

Answer:

The graph in the attached figure

Step-by-step explanation:

Let

x -----> the number of solved puzzles

y -----> the number of solved riddles

we know that

2x+y \geq 4

The solution of the inequality is the shaded area above the solid line 2x+y=4

The slope of the solid line is negative m=-2

The y-intercept of the solid line is the point (0,4)

The x-intercept of the solid line is the point (2,0)

therefore

The graph in the attached figure

3 0
3 years ago
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Calculator display for 7/12
Alina [70]

Answer:

7/12=0.583333333333

Step-by-step explanation:

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3 years ago
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