Instructor's Praise: Suppose the amount of praise an instructor gives in his class can be moddled by a Poisson random variable X with rate 3 sentences per class. (a) What is the rate per elass (A) and hence the mean and variance of the random variable X. (b) 1,2, 3, 4, 5). (Fill the table below and show all your working) Find the probability that in a particular elass he gives z sentences of praise (where z (c) that in the next class he gives z sentences of praise (where z = 1,2,3, 4, 5). (d) praise, what's the probability that he gave 3 sentences of praise. Given that the instructor didn't give any praise in the first 10 classes. What is the probablity Find the conditional probability that in a class given that he gives at most 5 sentences of

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Chapter1: Combinatorial Analysis
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Part a,b and c have been answered, this is for part d now.

4.
Instructor's Praise: Suppose the amount of praise an instructor gives in his class can be
moddled by a Poisson random variable X with rate 3 sentences per elass.
(a)
What is the rate per class (A) and hence the mean and variance of the random variable X.
(b)
1,2, 3, 4, 5). (Fill the table below and show all your working)
Find the probability that in a particular elass he gives z sentences of praise (where z =
(c)
that in the next class he gives r sentences of praise (where r = 1,2, 3, 4, 5).
(d)
praise, what's the probability that he gave 3 sentences of pr ai se.
Given that the instructor didn't give any praise in the first 10 classes. What is the probability
Find the conditional probability that in a class given that he gives at most 5 sentences of
(a)
(b) The following are the relevant probabilities:
X =1
P(X = z)
123
4
(c) The following are the relevant probabilities:
X = x
P(X = x)
1| 2 3 | 4|5
(d)
Transcribed Image Text:4. Instructor's Praise: Suppose the amount of praise an instructor gives in his class can be moddled by a Poisson random variable X with rate 3 sentences per elass. (a) What is the rate per class (A) and hence the mean and variance of the random variable X. (b) 1,2, 3, 4, 5). (Fill the table below and show all your working) Find the probability that in a particular elass he gives z sentences of praise (where z = (c) that in the next class he gives r sentences of praise (where r = 1,2, 3, 4, 5). (d) praise, what's the probability that he gave 3 sentences of pr ai se. Given that the instructor didn't give any praise in the first 10 classes. What is the probability Find the conditional probability that in a class given that he gives at most 5 sentences of (a) (b) The following are the relevant probabilities: X =1 P(X = z) 123 4 (c) The following are the relevant probabilities: X = x P(X = x) 1| 2 3 | 4|5 (d)
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