.4. Let X be a discrete random variable with the probability distribution given in the table below: 0. 1 3. 4. P(X=x) a. Find u ,o and O 0.05 0.1 0.2 0.4 0.2 0.05

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6th Edition
ISBN:9781119256830
Author:Amos Gilat
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rature, and part
dings corro
emical re
ACTIVITY 1
1. Let X be a random variable with the following probability distribution.
0.1
onverte
com
subs
4.
3
0.2
0.3
0.4
P(X=x)
a. Find E(X) and Var(X).
2. Let X be a random variable with the following probability distribution.
20
25
10
15
0.25
0.15
0.05
0.3
0.25
P(X=x)
a. Find the expected value and variance.
3. The number of suits sold per day at a department store is shown in the table,
with the corresponding probabilities. Find the Mean u = E(x), Variance o and
%3D
Standard deviation o of the distribution.
20
Number of suits sold, x
19
21
22
23
Probability, P(X=x)
0.2
0.2
0.3
0.2
0.1
.4. Let X be a discrete random variable with the probability distribution given in the
table below:
1
3
4
0.1
0.2
0.4
0.2
0.05
0.05
P(X=x)
a. Find u ,o² and O
Transcribed Image Text:rature, and part dings corro emical re ACTIVITY 1 1. Let X be a random variable with the following probability distribution. 0.1 onverte com subs 4. 3 0.2 0.3 0.4 P(X=x) a. Find E(X) and Var(X). 2. Let X be a random variable with the following probability distribution. 20 25 10 15 0.25 0.15 0.05 0.3 0.25 P(X=x) a. Find the expected value and variance. 3. The number of suits sold per day at a department store is shown in the table, with the corresponding probabilities. Find the Mean u = E(x), Variance o and %3D Standard deviation o of the distribution. 20 Number of suits sold, x 19 21 22 23 Probability, P(X=x) 0.2 0.2 0.3 0.2 0.1 .4. Let X be a discrete random variable with the probability distribution given in the table below: 1 3 4 0.1 0.2 0.4 0.2 0.05 0.05 P(X=x) a. Find u ,o² and O
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