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yuradex [85]
3 years ago
10

Suppose that 5% of the general population has a disease and the test for the disease is accurate 80% of the time. What is the pr

obability of testing positive for the disease?
Mathematics
2 answers:
Aleonysh [2.5K]3 years ago
6 0

Answer:

Step-by-step explanation:

Say we are testing 100 people

we test 100 times

80 of the 100 tests result in 5 people having the disease.

so 5 people of 80 of 100 test have this disease

therefore, 5/80/100

.065

aivan3 [116]3 years ago
4 0
<h2>Answer:</h2>

The probability of testing positive for the disease is:

                                23%

<h2>Step-by-step explanation:</h2>

The population who have disease = 5%

Hence, the population who do not have disease= 95%

( since 100%-55=95%)

Also, the percent that the test is accurate= 80%

and the percent that the test is not accurate= 100%-80%=20%

Hence, the  probability of testing positive for the disease is :

The person actually has disease×Test is positive+Person do not have disease×test is not accurate

=  0.05×0.80+0.95×0.20

= 0.23

Hence, the probability is: 23%

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(BEGINNER LEVEL, Picture provided) Use the line of best fit to predict the total amount of money earned in tips after working 12
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Svet_ta [14]

Answer:

C

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4 0
3 years ago
I can't quite figure out what ( 7- 4n ) x 6 is with distributive property.
Tema [17]

Answer:

(42-24n)

Step-by-step explanation:

(7-4n)×6

take the 6 and multiply it to the integers in the paraenthesis.

so you take the ouside number which is 6 and multiply it with the first number which is 7 in the paraenthesis.

6×7=42

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7 0
3 years ago
Find the equation of a line that passes through the point (-2,1) and has a gradient of -3.
zavuch27 [327]

A straight line passing through the point (-2,1) and having a gradient of -3 yields the equation y = -3x - 5.

We know that a straight line is an infinitely long line with no curves on it. A straight line's equation is

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Given that the gradient of the given straight line = m = -3.

Putting this value in (1), we get

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So, 1 = (-3)(-2) + c

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i.e. c = 1 - 6 = -5

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y = -3x - 5

Therefore the equation of the given straight line is

y = -3x - 5

Know more about straight lines here -

brainly.com/question/8085796

#SPJ10

6 0
2 years ago
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