The following contingency table gives the results of a sample survey of male and female respondents with regard to their preferred cellphone service provider: Preferred supplier Vodacom MTN Cell C Total No. of Males 100 100 50 250 No. of females 150 175 25 250 Total 250 275 75 500 1. What is the probability of randomly selecting a male respondent from the sample? 2. What is the probability of randomly selecting a respondent who is female and prefers MTN? 3. What is the probability of selecting a male respondent, given that the preferred provider is Cell C?

The following contingency table gives the results of a sample survey of male and female respondents with regard to their preferred cellphone service provider: Preferred supplier Vodacom MTN Cell C Total No. of Males 100 100 50 250 No. of females 150 175 25 250 Total 250 275 75 500 1. What is the probability of randomly selecting a male respondent from the sample? 2. What is the probability of randomly selecting a respondent who is female and prefers MTN? 3. What is the probability of selecting a male respondent, given that the preferred provider is Cell C?

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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Question

The following contingency table gives the results of a sample survey of
male and female respondents with regard to their preferred cellphone
service provider:

Preferred supplier

Vodacom

MTN

Cell C

Total

No. of Males

100

250

No. of females

150

175

250

Total

250

275

500

1. What is the probability of randomly selecting a male respondent from
the sample?

2. What is the probability of randomly selecting a respondent who is
female and prefers MTN?

3. What is the probability of selecting a male respondent, given that the
preferred provider is Cell C?

4. What is the probability of selecting a respondent who is male or who
prefers Vodacom?

5. What isthe probability of selecting a respondent who does not prefer
Vodacom?

Appreciate the assistance

Thanks

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