Statistics and probability

Question 1 of 10

In how many ways can a committee of 3 be chosen from 6 people?

Question 2 of 10

A committee of 4 is chosen from 5 men and 4 women. In how many ways can it contain exactly 2 women?

Question 3 of 10

Events A and B are independent with P(A) = 0.5 and P(B) = 0.4. Find P(A ∩ B).

Question 4 of 10

A fair die is thrown 3 times. P(at least one six) is

Question 5 of 10

A bag contains 5 red and 3 blue balls. Two are drawn with replacement. P(both blue) is

Question 6 of 10

Find the variance of 2, 4, 6, 8 and 10.

Question 7 of 10

In how many ways can a committee of 2 boys and 1 girl be chosen from 4 boys and 3 girls?

Question 8 of 10

The variance of 2, 4, 6 is

Question 9 of 10

How many 3-digit numbers can be formed from 1, 2, 3, 4 without repetition?

Question 10 of 10

A committee of 3 is chosen from 5 men and 4 women. The number of committees with exactly 2 women is