Chapter 5: Q 1.1. (page 314)
Find P(L). Interpret this probability in context.
Short Answer
The probability is 0.3656
/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none}
Learning Materials
Features
Discover
Chapter 5: Q 1.1. (page 314)
Find P(L). Interpret this probability in context.
The probability is 0.3656
All the tools & learning materials you need for study success - in one app.
Get started for free
Teens online We saw in an earlier example (page 319) that 93% of teenagers are online and that 55% of online teens have posted a profile on a social-networking site. Of online teens with a profile, 76% have placed comments on a friend’s blog. What percent of all teens are online, have a profile, and comment on a friend’s blog? Show your work.
Myspace versus Facebook A recent survey suggests that of college students have posted a profile on Facebook, use Myspace regularly, and do both. Suppose we select a college student at random.
(a) Assuming that there are million college students, make a two-way table for this chance process.
(b) Construct a Venn diagram to represent this setting.
(c) Consider the event that the randomly selected college student has posted a profile on at least one of these two sites. Write this event in symbolic form
using the two events of interest that you chose in (b).
(d) Find the probability of the event described in (c).
Explain your method.
Find and Which of these conditional probabilities tells you whether this college’s EPS students tend to earn lower grades than students in liberal arts and social sciences? Explain.
Find .
Explain why . Then use the general addition rule to find.
What do you think about this solution?
We value your feedback to improve our textbook solutions.