Sixty percent of the eligible voting residents of a certain community support the incumbent candidate. If eight of the residents are selected at random, find the probability that at least five of the eight support the candidate.
1 answer:
By the binomial theorem we know that
The probability that exactly 5 of 8 support the incumbent is the term
So at least five of eight support is the sum of this term and beyond,
No particularly easy way of calculating that except popping it into Wolfram Alpha which reports
Shouldn't half the terms work out to .6 ? Interestingly it's not exactly .6 but pretty close at .594.
You might be interested in
Answer:
prime number
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
step 2 : x + 3 = 0 and x - 5 = 0 ← correct
step 3
x = 3 and x = - 5 ← error made here with signs, correct statement should be
x + 3 = 0 ⇒ x = - 3
x - 5 = 0 ⇒ x = 5
Answer:
19 if u count -20 then 20
Step-by-step explanation:
positive numbers arent really integers
A=1/2(b1+b2)h - area of trapezoid
to find the height we need to look at the right triangle inside the trapezoid
in the right triangle longest diagonal is a hypotenuse, so we need to us Pythagorean theorem
Answer: 140
Step-by-step explanation:
hope this helps