Answer:

Step-by-step explanation:
We have to solve for x from the logarithmic equation as follows:
⇒
{Since, using logarithmic property
}
Now, converting this logarithmic equation above into exponential equation we get,
{Since we know that if
then, we can write
}
⇒
⇒
⇒
(Answer)
Answer:
You will have 21 positive results.
Step-by-step explanation:
Sensitivity of test:
Is the true positive rate, that is, the proportion of positive results that give positive tests.
Specificity of test:
True negative rate, that is, the proportion of negative results that give negative tests.
90% sensitive, 20 reliable people apply
0.9*20 = 18
95% specific, 60 unreliable people apply
1 - 0.95 = 0.05 of positive results.
0.05*60 = 3
How many positive results will you have?
18 + 3 = 21
You will have 21 positive results.