1. The director of the school selects at random one student. a- Calculate the probability that the director selects a student from the section C. b- Calculate the probability that the director selects a student from the section B. c- Calculate the probability that the director selects a girl and from section A.

1. The director of the school selects at random one student. a- Calculate the probability that the director selects a student from the section C. b- Calculate the probability that the director selects a student from the section B. c- Calculate the probability that the director selects a girl and from section A.

Name: Part B:The below table represents the distribution of 100 students ac
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Description: Part B:The below table represents the distribution of 100 students according to its section: Section A35Section BSection CВoys205Girls1510151. The director of the school selects at random one student.a- Calculate the probability that the director se

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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Concept explainers

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.

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Question

Part B:
The below table represents the distribution of 100 students according to its section:

Section A
35
Section B
Section C
Вoys
20
5
Girls
15
10
15
1. The director of the school selects at random one student.
a- Calculate the probability that the director selects a student from the section C.
b- Calculate the probability that the director selects a student from the section B.
c- Calculate the probability that the director selects a girl and from section A.
2. In this part the director selects one student from each section.
a- Prove that the probability that the director selects two girls is
7
20
b- Calculate the probability that the director selects at least two girls.

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