Mean (*x*) =

= 494/10

= 49.4

Direction: Study the given information carefully and answer the questions that follow:

A basket contains 5 red, 4 blue, 3 green stones.

If two stones are picked at random, what is the probability that both are blue?

Probability if both is blue

Direction: Study the given information carefully and answer the questions that follow:

A basket contains 5 red, 4 blue, 3 green stones.

If four balls are picked at random, what is the probability that two are blue and two are red?

Probability if two are Blue and two are Red

[(^{4}C_{2}*^{5}C_{2})/^{12}C_{4}] = (6*10)/495 → 4/33

here

hence r = 0, therefore there is no linear correlation.

n(S)=36.

Let A = event of getting sum greater than 9.

= {(4,6),(5,5),(6,4),(5,6),(6,5),(6,6)}

And B = event of getting 5 on black die.

={(5,1),(5,2),(5,3),(5,4),(5,5),(5,6)}

Direction: Study the given information carefully and answer the questions that follow:

A basket contains 5 red, 4 blue, 3 green stones.

If three balls are picked at random, what is the probability that at least one is green?

Probability if at least one is Green

[1-(^{9}C_{3}/^{12}C_{3})] = 84/220 → 34/55

but sign of is same as the sign of

therefore,