Answer:
x=6
Step-by-step explanation:
Answer:
6 and 15
Step-by-step explanation:
This problem lends itself to the binomial probability approach.
Focus on students who are not secretly robots.
Then P(student is not a robot) = 2/6, or 1/3. Here n=6 and x=2.
Then the desired probability is binompdf(6,1/3, 2), which, by calculator, comes out to 0.329.
Answer:
ln(2) +3ln(a) -4ln(b)
Step-by-step explanation:

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The applicable rules of logarithms are ...
log(ab) = log(a)+log(b)
log(a^b) = b·log(a)