3. Suppose there are n audiences for a show, say X1₁,..., Xn. Each audience gets a switch which can be turned on or off. The switches are wired to m challenges of the form X₂ V XjV¬Xk (3-CNF, that is or of the variables / the negation of exactly 3 variables). Leaving Blank would result in 20% for each part. (a) Suppose all audiences turn their respective switch on/off independently at random. Calculate the expected number of challenges being satisfied. (b) Suppose m → ∞. Show that with (1)-probability, a random configu- ration of switches satisfy at least 75% of the challenges.

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Please do not rely too much on chatgpt, because its answer may be wrong. Please consider it carefully and give your own answer. You can borrow ideas from gpt, but please do not believe its answer.Very very grateful!Please do not rely too much on chatgpt, because its answer may be wrong. Please consider it carefully and give your own answer. You can borrow
ideas from gpt, but please do not believe its answer.Very very grateful!

3.
Suppose there are n audiences for a show, say X₁,..., Xn. Each audience
gets a switch which can be turned on or off. The switches are wired to m challenges of
the form X₂ V X¡ V¬Xk (3-CNF, that is or of the variables / the negation of exactly 3
variables). Leaving Blank would result in 20% for each part.
(a)
Suppose all audiences turn their respective switch on/off independently
at random. Calculate the expected number of challenges being satisfied.
(b)
Suppose m→∞. Show that with (1)-probability, a random configu-
ration of switches satisfy at least 75% of the challenges.
Transcribed Image Text:3. Suppose there are n audiences for a show, say X₁,..., Xn. Each audience gets a switch which can be turned on or off. The switches are wired to m challenges of the form X₂ V X¡ V¬Xk (3-CNF, that is or of the variables / the negation of exactly 3 variables). Leaving Blank would result in 20% for each part. (a) Suppose all audiences turn their respective switch on/off independently at random. Calculate the expected number of challenges being satisfied. (b) Suppose m→∞. Show that with (1)-probability, a random configu- ration of switches satisfy at least 75% of the challenges.
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