dirtridersteve65
29.01.2020 •
Mathematics
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 probability of testing positive for the disease?
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Ответ:
The probability of testing positive for the disease is:
23%
Step-by-step explanation: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%
Ответ:
a=corresponding sides of congruent triangles
b= by SAS condition ( ac=ce, acb=oce,oc=cb)