80% of English teachers read Shakespeare. You see someone reading Shakespeare. What is the probability that this person is an English teacher? (Also: 3% of the workforce are English teachers. If you are not an English teacher, there is a 10% chance that you read Shakespeare.) Group of answer choices.
a. 80.
b. 20.
c. 024.
d. 14

The probability that this person is an English teacher will be "0.20".

According to the question,

P (English teacher),

So,

P(Not English teacher),

        =

P(Shakespeare | English teacher),

P(Shakespeare | Not English teacher),

Hence,

By using the Bayes' theorem, we get

=

=

=

=

Thus the above answer is correct.

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20%

Step-by-step explanation:

P(S) = (0.03×0.8) + (0.97×0.1)

0.121

P(E/S) = P(E&S)/P(S)

= (0.03×0.8)/0.121

= 24/121

0.1983471074 × 100

= 19.83471074%

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204

-1

step-by-step explanation: