(a) {at most three lines are in use} (b) {fewer than three lines are in use} (c) {at least three lines are in use} (d) {between two and five lines, inclusive, are in use}

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter3: Functions And Graphs
Section3.5: Graphs Of Functions
Problem 48E
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Please help with part a,b,c,d!! 

Use the graph to calculate the probabilities of the events given below.
(a) {at most three lines are in use}
(b) {fewer than three lines are in use}
(c) {at least three lines are in use}
(d) {between two and five lines, inclusive, are in use}
Transcribed Image Text:Use the graph to calculate the probabilities of the events given below. (a) {at most three lines are in use} (b) {fewer than three lines are in use} (c) {at least three lines are in use} (d) {between two and five lines, inclusive, are in use}
A mail-order computer business has six telephone lines. Let X denote the number of lines in use at a specified time. Suppose the pmf of X is as given in the accompanying table.
1
2
3 4
5 6
p(x)
0.12 0.18 0.20 0.20 0.20 0.06 0.04
Calculate the cdf F(x).
2
3
4
5
6
F(x)
Graph the cdf F(x).
F(x)
F(x)
1.0
1.0
0.8
0.8
0.6
0.6
0.4
0.4
0.2
0.2
0.0
0.0
1
3
4
7
1
3
4
7
F(x)
F(x)
1.0
1.0
0.8
0.8
0.6
0.6
0.4
0.4
0.2
0.2
0.0
0.0
X
1
3
4
5
7
1
2
3
4
6
7
Transcribed Image Text:A mail-order computer business has six telephone lines. Let X denote the number of lines in use at a specified time. Suppose the pmf of X is as given in the accompanying table. 1 2 3 4 5 6 p(x) 0.12 0.18 0.20 0.20 0.20 0.06 0.04 Calculate the cdf F(x). 2 3 4 5 6 F(x) Graph the cdf F(x). F(x) F(x) 1.0 1.0 0.8 0.8 0.6 0.6 0.4 0.4 0.2 0.2 0.0 0.0 1 3 4 7 1 3 4 7 F(x) F(x) 1.0 1.0 0.8 0.8 0.6 0.6 0.4 0.4 0.2 0.2 0.0 0.0 X 1 3 4 5 7 1 2 3 4 6 7
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ISBN:
9781133382119
Author:
Swokowski
Publisher:
Cengage