(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?
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter12: Probability
Section12.3: Conditional Probability; Independent Events; Bayes' Theorem
Problem 85E
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Can someone please help me to solve the following question. Thank you.
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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