By applying binomial probability, the probability of getting at least four (4) successes is 0.9527.
<h3>How to determine the probability?</h3>
In order to determine the probability of getting at least four (4) successes, we would apply binomial probability equation:
The probability of getting at least four (4) successes is given by:
P(x ≥ 4) = P(4) + P(5) + P(6)
Substituting the given parameters into the equation, we have;
P = ⁶C₄ × (0.85)⁴ × (0.15)³ + ₅C₆ × (0.85)⁵ × (0.15) + ⁶C₆ × (0.85) × (0.15)⁶
P = 0.17618 + 0.39933 + 0.37715
P = 0.9527.
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The answer is
2 or more person get sick
This is when wo or more people get the same illness from the same contaminated food or drink, the event is called a foodborne outbreak.
C. Glacial evidence found in south africa
Answer:
There are two rational roots for f(x)
Explanation:
We are given a function
f(x) = x^6-2x^4-5x^2+6f(x)=x6−2x4−5x2+6
To find the number of rational roots for f(x).
Let us use remainder theorem that when
f(a) =0, (x-a) is a factor of f(x) or x=a is one solution.
Substitute 1 for x
f(1) = 1-2-5+6=0
Hence x=1 is one solution.
Let us try x=-1
f(-1) = 1-2-5+6 =0
So x =-1 is also a solution and x+1 is a factor
We can write f(x) by trial and error as
f(x) = (x-1)(x+1)(x^2-3)f(x)=(x−1)(x+1)(x2−3)
We find that f(x) (x^2-3)f(x)(x2−3) factor gives two irrational solutions as
±√3.
Hence number of rational roots are 2.
