3 years ago

What's the Awnswer to this equation having trouble with it

Mathematics

2 answers:

Roman55 [17]3 years ago

8 0

The answer I got was positive 2.5

Mademuasel [1]3 years ago

5 0

If you want it as a decimal it is +2.5 (positive 2.5)

But, if you're looking for a mixed number it is $2\frac{1}{5}$

And, if you're looking for a Regular Fraction $\frac{5}{2}$

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On average 83.1% of welds performed by a particular welder are defective. if, in one day, the welder creates three welds. what i

Nuetrik [128]

Let p be 0.831 denote the percentage of defective welds and q be 0.169 denote the percentage of non-defective welds.

Using the binomial distribution, we want all three to be defective.
$P(X = 3) = \binom{3}{3}(p)^{3}{q}^{3 - 3}$
$P(X = 3) = \binom{3}{3}(0.831)^{3}(1)$
$P(X = 3) = (0.831)^{3} \approx 0.573856191$