200+ Probability-and-statistics Questions

Probability-and-statistics Questions Set 12:

Quiz Mode

If P(B|A) = p(b), then P(A ∩ B) = ?

p(b)+p(a)

p(a)

p(b)

p(a)⋅p(b)

Solution:

In a positively skewed distribution,

mode > median > mean

mean > median > mode

median > mean > mode

median > mode > mean

Solution:

If the probability of an event E happening is P(E), what is the probability of E not happening?

-P(E)

P(E)-1

1-P(E)

1/P(E)

Solution:

Seven car accidents occurred in a week. What is the probability that they all occurred on the same day?

1/823543

1/117649

1/128

7/128

Solution:

( Σ|x_i - A| )/n Where A can be either the mean, median, or the mode is known as

Range

Quartile Deviation

Mean Deviation

Standard Deviation

Solution:

A company recruited 120 people in the last 100 days. Using Poisson Distribution, find the probability that there will be at least 1 recruitment per day.

0.3012

0.6988

0.3614

0.6385

Solution:

A has one share in a lottery with 1 prize and 2 blanks. B has 3 shares in a lottery with 3 prizes and 6 blanks. The ratio of the probability of A's success to B's success is:

7 : 16

6 : 14

16 : 7

14 : 6

Solution:

According to the records, 35 people died in the last 28 days in a city. Assuming the number of deaths follows a Poisson distribution, find the probability that there will be at least 1 death per day.

0.7135

0.2865

0.358

0.6419

Solution:

The odds against a husband who is 45 years of age living till he is 70 are 7 : 5, and the odds against his wife who is 36 living till she is 61 are 5 : 3. The probability that at least one of them will be alive 25 years from now is

5/36

13/64

61/96

15/54

Solution:

If the probability of a rotten apple is 0.4, find the mean and standard deviation of the number of rotten apples in a distribution of 300 apples.

Mean = 9.79, Standard deviation = 120

Mean = 120, Standard deviation = 8.485

Mean = 9.79, Standard deviation = 180

Mean = 180, Standard deviation = 8.485

Probability-and-statistics Questions Set 12:

If P(B|A) = p(b), then P(A ∩ B) = ?

Solution:

In a positively skewed distribution,

Solution:

If the probability of an event E happening is P(E), what is the probability of E not happening?

Solution:

Seven car accidents occurred in a week. What is the probability that they all occurred on the same day?

Solution:

( Σ|x_i - A| )/n Where A can be either the mean, median, or the mode is known as

Solution:

A company recruited 120 people in the last 100 days. Using Poisson Distribution, find the probability that there will be at least 1 recruitment per day.

Solution:

A has one share in a lottery with 1 prize and 2 blanks. B has 3 shares in a lottery with 3 prizes and 6 blanks. The ratio of the probability of A's success to B's success is:

Solution:

According to the records, 35 people died in the last 28 days in a city. Assuming the number of deaths follows a Poisson distribution, find the probability that there will be at least 1 death per day.

Solution:

The odds against a husband who is 45 years of age living till he is 70 are 7 : 5, and the odds against his wife who is 36 living till she is 61 are 5 : 3. The probability that at least one of them will be alive 25 years from now is

Solution:

If the probability of a rotten apple is 0.4, find the mean and standard deviation of the number of rotten apples in a distribution of 300 apples.

Solution:

Related Question Sets:

Related Topics:

Probability-and-statistics Questions Set 12:

If P(B|A) = p(b), then P(A ∩ B) = ?

Solution:

In a positively skewed distribution,

Solution:

If the probability of an event E happening is P(E), what is the probability of E not happening?

Solution:

Seven car accidents occurred in a week. What is the probability that they all occurred on the same day?

Solution:

( Σ|xi - A| )/n Where A can be either the mean, median, or the mode is known as

Solution:

A company recruited 120 people in the last 100 days. Using Poisson Distribution, find the probability that there will be at least 1 recruitment per day.

Solution:

A has one share in a lottery with 1 prize and 2 blanks. B has 3 shares in a lottery with 3 prizes and 6 blanks. The ratio of the probability of A's success to B's success is:

Solution:

According to the records, 35 people died in the last 28 days in a city. Assuming the number of deaths follows a Poisson distribution, find the probability that there will be at least 1 death per day.

Solution:

The odds against a husband who is 45 years of age living till he is 70 are 7 : 5, and the odds against his wife who is 36 living till she is 61 are 5 : 3. The probability that at least one of them will be alive 25 years from now is

Solution:

If the probability of a rotten apple is 0.4, find the mean and standard deviation of the number of rotten apples in a distribution of 300 apples.

Solution:

Related Question Sets:

Related Topics:

( Σ|x_i - A| )/n Where A can be either the mean, median, or the mode is known as