Is 1/4 of 8 equal to 2

Mathematics

2 answers:

PilotLPTM [1.2K]2 years ago

6 0

1/4 of 8 is equivalent to 8 divided by 4, which is 2, so you are correct. :)

Svet_ta [14]2 years ago

5 0

Yes, 1/4 of 8 is equal to two.
1/4x8=2
Hope this helps! :)

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Step-by-step explanation:

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a) P=0.3174

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d) The shape of the hypergeometric, in this case, is like a binomial with mean np=1.

Step-by-step explanation:

The appropiate distribution to model this is the hypergeometric distribution:

$P(X=x)=\frac{\binom{s}{x}\binom{N-s}{M-x}}{\binom{N}{M}}=\frac{\binom{6}{x}\binom{54}{10-x}}{\binom{60}{10}}$

a) What is the probability that none of the questions are essay?

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b) What is the probability that at least one is essay?

$P(X=1)=\frac{\binom{6}{1}\binom{54}{9}}{\binom{60}{10}}\\\\P(X=1)=\frac{6*(54!/(9!*43!)}{60!/(10!*50!)} =\frac{3.1908*10^{10}}{7.5394*10^{10}} =0.4232$