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Probability and StatisticsQuestion and Answers: Page 1

Question Number 224499    Answers: 0   Comments: 0

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Question Number 224476    Answers: 2   Comments: 0

Question Number 224399    Answers: 1   Comments: 0

Question Number 224327    Answers: 1   Comments: 1

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Question Number 223482    Answers: 0   Comments: 0

Question Number 222652    Answers: 0   Comments: 1

Question Number 221959    Answers: 0   Comments: 4

A bag contains 5 identical balls of which there is one red, one blue and the rest are white. What is the probability of selecting at least one white balls, if 3 balls are selected.

A bag contains 5 identical balls of which there is one red, one blue and the rest are white. What is the probability of selecting at least one white balls, if 3 balls are selected.

Question Number 221417    Answers: 0   Comments: 0

Let S be delimited by the equations x=0; y=0 ; z=0 and x+y+z=0 Find the flux of vector field V(x,y,z)=(x,y,x^2 +y^2 ) through S

$${Let}\:\:{S}\:{be}\:{delimited}\:{by}\:{the}\:{equations}\: \\ $$$${x}=\mathrm{0};\:{y}=\mathrm{0}\:;\:{z}=\mathrm{0}\:{and}\:{x}+{y}+{z}=\mathrm{0} \\ $$$${Find}\:{the}\:{flux}\:{of}\:{vector}\:{field}\: \\ $$$${V}\left({x},{y},{z}\right)=\left({x},{y},{x}^{\mathrm{2}} +{y}^{\mathrm{2}} \right)\:{through}\:{S} \\ $$

Question Number 221052    Answers: 2   Comments: 0

Question Number 220628    Answers: 0   Comments: 0

Question Number 220627    Answers: 3   Comments: 0

Question Number 220626    Answers: 2   Comments: 0

Question Number 220625    Answers: 1   Comments: 0

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Question Number 220074    Answers: 0   Comments: 0

Question Number 219560    Answers: 0   Comments: 0

Suppose that an urn contains 100,000 marbles and 120 are red . If a random sample of 1000 is drawn, what are the probabilities that 0,1,2,3 and 4 respectively will be red. What is the mean and variance?

Suppose that an urn contains 100,000 marbles and 120 are red . If a random sample of 1000 is drawn, what are the probabilities that 0,1,2,3 and 4 respectively will be red. What is the mean and variance?

Question Number 218437    Answers: 0   Comments: 0

Question Number 217909    Answers: 0   Comments: 15

If two fair dice is thrown twice, what is the probability of obtaining an even number

If two fair dice is thrown twice, what is the probability of obtaining an even number

Question Number 217818    Answers: 1   Comments: 0

Question Number 217617    Answers: 1   Comments: 0

Question Number 216810    Answers: 0   Comments: 1

40 random numbers picked from 0 to 100. what is the probability that at least half of them has the range of 10.

$$ \\ $$40 random numbers picked from 0 to 100. what is the probability that at least half of them has the range of 10.

Question Number 216746    Answers: 0   Comments: 0

Calculate (((5+i)^4 )/(239+i)) Then Prove the Machin formula 4arctan((1/5))−arctan((1/(239)))=(π/4)

$${Calculate}\:\frac{\left(\mathrm{5}+{i}\right)^{\mathrm{4}} }{\mathrm{239}+{i}}\:{Then}\: \\ $$$${Prove}\:{the}\:{Machin}\:{formula} \\ $$$$\mathrm{4}{arctan}\left(\frac{\mathrm{1}}{\mathrm{5}}\right)−{arctan}\left(\frac{\mathrm{1}}{\mathrm{239}}\right)=\frac{\pi}{\mathrm{4}} \\ $$

Question Number 216323    Answers: 1   Comments: 2

Let 10≥x,y≥0 and x,y∈R Find a)P(x−2>y) b)P(x+2<y)

$$\mathrm{Let}\:\mathrm{10}\geqslant{x},{y}\geqslant\mathrm{0}\:\mathrm{and}\:{x},{y}\in\mathbb{R} \\ $$$$\mathrm{Find} \\ $$$$\left.{a}\right){P}\left({x}−\mathrm{2}>{y}\right) \\ $$$$\left.{b}\right){P}\left({x}+\mathrm{2}<{y}\right) \\ $$

Question Number 216161    Answers: 1   Comments: 0

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