Suppose I have an urn with 9 balls: 4 green, 3 yellow and 2 white ones. I draw a ball from the urn repeatedly with replacement. (a) Suppose I draw n times. Let X., be the number of times I saw a green ball followed by a yellow ball. Calculate the expectation Ex, (b) Let y be the number of times I drew a green ball before the first white draw. Calculate E[Y]. Can you give an intuitive explanation for your answer

Step-by-step explanation:

From the question we are told that:

Sample size n=9

Number of Green

Number of yellow

Number of white

Probability of Green Followed by yellow P(GY) ball

Generally the equations for when n is even is mathematically given by

Therefore

Generally the equations for when n is odd is mathematically given by

b)

Probability of drawing white ball

Therefore

Therefore

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step-by-step explanation:

i think the answer is b.

step-by-step explanation:

not 100% sure though.