QUESTION 8 You are given the following table with joint probabilities for X and Y (i.e. bivariate probability distribution). 0.06 0.03 0.12 0.42 0.6 y 1 0.21 0.06 0.3 2 0.07 0.02 0.01 0.1 0.4 0.5 0.1 1.00 The expected value of Y is: E[Y] = 0×0.3 + 1×0.6 + 2×0.1 = 2.90 O True O False

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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QUESTION 8
You are given the following table with joint probabilities for X and Y (i.e. bivariate probability distribution).
0.12
0.42
0.06
0.6
0.3
0.1
y
1
0.21
0.06
0.03
0.07
0.02
0.01
0.4
0.5
0.1
1.00
The expected value of Y is: E[Y] = 0×0.3 + 1×0.6 + 2×0.1 = 2.90
O True
O False
o o o
Transcribed Image Text:QUESTION 8 You are given the following table with joint probabilities for X and Y (i.e. bivariate probability distribution). 0.12 0.42 0.06 0.6 0.3 0.1 y 1 0.21 0.06 0.03 0.07 0.02 0.01 0.4 0.5 0.1 1.00 The expected value of Y is: E[Y] = 0×0.3 + 1×0.6 + 2×0.1 = 2.90 O True O False o o o
QUESTION 9
Sales records of a hobby shop showed the following number of radio-controlled trucks sold weekly for each of the last 50 weeks.
What is the probability of selling either 1 truck or 3 trucks in any given week?
Number of Trucks Sold
Number of Weeks
20
15
1
10
3
4
1
O P{1 or 3 trucks sold} = 15/50 + 4/50
O P{1 or 3 trucks sold} = 15/50 - 4/50
O P{1 or 3 trucks sold} = 15/50 + 10/ 50+ 4/50
O P{1 or 3 trucks sold} = 15/50 x 4/50
%3D
Transcribed Image Text:QUESTION 9 Sales records of a hobby shop showed the following number of radio-controlled trucks sold weekly for each of the last 50 weeks. What is the probability of selling either 1 truck or 3 trucks in any given week? Number of Trucks Sold Number of Weeks 20 15 1 10 3 4 1 O P{1 or 3 trucks sold} = 15/50 + 4/50 O P{1 or 3 trucks sold} = 15/50 - 4/50 O P{1 or 3 trucks sold} = 15/50 + 10/ 50+ 4/50 O P{1 or 3 trucks sold} = 15/50 x 4/50 %3D
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