1. A survey showed that 8% of Internet users age 18 and older report keeping a vlog. Referring to the 18-29 age group as young adults, the survey showed that for vloggers 54% are young adults and for non-vloggers 24% are young adults. a. Develop a joint probability table for these data with two rows (vloggers vs non-vloggers) and two columns (young vs older adults), b. What is the probability that an Internet user is a young adult? c. What is the probability that an Internet user keeps a vlog and is a young adult? d. Suppose that in a follow-up phone survey we contact someone who is 24 years old. What is the probability that this person keeps a vlog?
1. A survey showed that 8% of Internet users age 18 and older report keeping a vlog. Referring to the 18-29 age group as young adults, the survey showed that for vloggers 54% are young adults and for non-vloggers 24% are young adults. a. Develop a joint probability table for these data with two rows (vloggers vs non-vloggers) and two columns (young vs older adults), b. What is the probability that an Internet user is a young adult? c. What is the probability that an Internet user keeps a vlog and is a young adult? d. Suppose that in a follow-up phone survey we contact someone who is 24 years old. What is the probability that this person keeps a vlog?
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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![1. A survey showed that 8% of Internet users age 18 and older report keeping a vlog. Referring
to the 18-29 age group as young adults, the survey showed that for vloggers 54% are young
adults and for non-vloggers 24% are young adults.
a. Develop a joint probability table for these data with two rows (vloggers vs non-vloggers)
and two columns (young vs older adults),
b. What is the probability that an Internet user is a young adult?
c. What is the probability that an Internet user keeps a vlog and is a young adult?
d. Suppose that in a follow-up phone survey we contact someone who is 24 years old. What
is the probability that this person keeps a vlog?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb153726d-1335-4432-ad48-8511ba506656%2Fa464510e-0c4a-4691-add8-bb01f27c2d23%2F71omuabi_processed.png&w=3840&q=75)
Transcribed Image Text:1. A survey showed that 8% of Internet users age 18 and older report keeping a vlog. Referring
to the 18-29 age group as young adults, the survey showed that for vloggers 54% are young
adults and for non-vloggers 24% are young adults.
a. Develop a joint probability table for these data with two rows (vloggers vs non-vloggers)
and two columns (young vs older adults),
b. What is the probability that an Internet user is a young adult?
c. What is the probability that an Internet user keeps a vlog and is a young adult?
d. Suppose that in a follow-up phone survey we contact someone who is 24 years old. What
is the probability that this person keeps a vlog?
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