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Svetllana [295]

4 years ago

6

Sam divided A rectangle into 8 congruent rectangles that each have the area shown. what is tge area of tge rectangle befoe sam d

ivided it

1 answer:

aniked [119]4 years ago

3 0

No area is shown. So befoe sam divided it,
the area of tge original rectangle was . . .

8 x 0 = zero .

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satela [25.4K]

Answer:

For each person, there are only two possible outcomes. Either they are left handed, or they are not. The probability of a person being left-handed is independent from other people. So we use the binomial probability distribution to solve this question.

0.1% probability that they are all left-handed.

Step-by-step explanation:

For each person, there are only two possible outcomes. Either they are left handed, or they are not. The probability of a person being left-handed is independent from other people. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

10% of us are left handed.

This means that $p = 0.1$

If three people are randomly selected, find the probability that they are all left-handed.

This is P(X = 3) when n = 3. So

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 3) = C_{3,3}.(0.1)^{3}.(0.9)^{0} = 0.001$

0.1% probability that they are all left-handed.

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