Suppose you choose four people at random from a Statistics class in which you know 20% of the students have an A average. Let X be the number of students in your sample who have an A average. Obtain the probability distribution for X and plot the probability histogram. X Probability
Suppose you choose four people at random from a Statistics class in which you know 20% of the students have an A average. Let X be the number of students in your sample who have an A average. Obtain the probability distribution for X and plot the probability histogram. X Probability
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
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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 alt="Suppose you choose four people at random from a Statistics class in which you know 20% of the students have an A average. Let X be
the number of students in your sample who have an A average. Obtain the probability distribution for X and plot the probability
histogram.
X Probability
0 i
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3
A
0.45
0.4
0.35
0.3
i
Probability histogram:
0.25
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MI
0.2
0.15-
0.1
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0
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1
2
X
Figure 1.
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0.45
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0.25
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02
0.15
0.1
0.05
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0
2
X
Figure 2.
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Figure 3.
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Transcribed Image Text:Suppose you choose four people at random from a Statistics class in which you know 20% of the students have an A average. Let X be
the number of students in your sample who have an A average. Obtain the probability distribution for X and plot the probability
histogram.
X Probability
0 i
N
3
A
0.45
0.4
0.35
0.3
i
Probability histogram:
0.25
i
MI
0.2
0.15-
0.1
0.05-
0
0
1
2
X
Figure 1.
3
0.45
0.4
0.35
0.3
0.25
m 10 el
02
0.15
0.1
0.05
0
0
2
X
Figure 2.
3
0.45
0.4
0.35-
0.3-
0.25
02-
0.15
0.1-
0.05
0
0
1
2
X
Figure 3.
3
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