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(a) What is the probability that the individual owns an iPhone? (b) If we learn that the selected individual owns an Andoid phone, what now is the proba- bility that his/her age is 55+? (c) If we learn that the selected individual is 18-34 years old, what now is the probability that he/she uses neither iPhone nor android phone?

(a) What is the probability that the individual owns an iPhone? (b) If we learn that the selected individual owns an Andoid phone, what now is the proba- bility that his/her age is 55+? (c) If we learn that the selected individual is 18-34 years old, what now is the probability that he/she uses neither iPhone nor android phone?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter6: Ratio, Proportion, And Probability
Section6.7: Probability And Odds
Problem 2C
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4. A random sample of 2000 adult cell-phone owners from the United States were asked about their age and which type of cell phone they own: iPhone, Android, or other (including non-smartphones). A summary of the data is given below: 18-34 35-54 iPhone 167 Android 212 Others 131 55+ 170 123 185 100 274 638 Consider randomly selecting one adult from the sample. (a) What is the probability that the individual owns an iPhone? (b) If we learn that the selected individual owns an Andoid phone, what now is the proba- bility that his/her age is 55+? (c) If we learn that the selected individual is 18-34 years old, what now is the probability that he/she uses neither iPhone nor android phone? Consider the system of components connected as in the picture below. If compo- nents work independently of one another and the probability that each component working is 0.9, what is the probability that the entire system will work? A с B D E
Transcribed Image Text:4. A random sample of 2000 adult cell-phone owners from the United States were asked about their age and which type of cell phone they own: iPhone, Android, or other (including non-smartphones). A summary of the data is given below: 18-34 35-54 iPhone 167 Android 212 Others 131 55+ 170 123 185 100 274 638 Consider randomly selecting one adult from the sample. (a) What is the probability that the individual owns an iPhone? (b) If we learn that the selected individual owns an Andoid phone, what now is the proba- bility that his/her age is 55+? (c) If we learn that the selected individual is 18-34 years old, what now is the probability that he/she uses neither iPhone nor android phone? Consider the system of components connected as in the picture below. If compo- nents work independently of one another and the probability that each component working is 0.9, what is the probability that the entire system will work? A с B D E
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