Please HELP ME to solve these...

Attachment 19312Attachment 19310

Answer:

Q3: 0.7383

Q6: 0.6472, (i)2.328, (ii)0.8171

Q7: (i)0.223, (ii)0.934, (iii)0.050

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- October 13th 2010, 04:43 AMcloud5Discrete Probability Distribution
Please HELP ME to solve these...

Attachment 19312Attachment 19310

Answer:

Q3: 0.7383

Q6: 0.6472, (i)2.328, (ii)0.8171

Q7: (i)0.223, (ii)0.934, (iii)0.050 - October 13th 2010, 05:14 AMmathaddict
I will do 3 first, will be back for (6) and (7) after dinner if no other posters have replied.

For (3), since the puzzle on Monday has been solved, he is only left with 4 puzzles to solve. This is a case of a binomial distribution.

X~B(4 , 3/4)

Then calculate P(X>=3) - October 13th 2010, 06:11 AMmathaddict
#6

Set up a probability distribution table, with Y=0,1,2,3,>3. Calculate their respective probabilities. Then E(x) and Var(x) will follow.

Next, find the mode of the distribution. This is similar to the question asked in your previous post.

#7

X~P(3)

Calculate P(X=0) - October 13th 2010, 07:04 PMcloud5
- October 14th 2010, 04:18 AMmathaddict