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Question: Facebook versus YouTube A recent survey suggests that 85% of college students have posted a profile on Facebook, 73% use YouTube regularly, and 66% do both. Suppose we select a college student at random.
(a) 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 Facebook or uses YouTube regularly. Write this event in symbolic form based on your Venn diagram in part (b).
(d) Find the probability of the event described in part (c). Explain your method.
Use StatKey or other technology to generate a bootstrap distribution of sample means and find the standard error for that distribution. Compare the result to the standard error given by the Central Limit Theorem, using the sample standard deviatio..
Construct a dialogue between Andrew Jackson and Henry clay. What kind of conversation would they have? What would they talk about?
Students at a private liberal arts college are classified as being freshmen, sophomores, juniors, or seniors, and also according to whether they are male or female. Find the total number of possible classifications for the students of that colleg..
Find the approximate percentile ranks of these scores by constructing a percentile graph (Ogive).Use the Ogive, estimate percentile of a student who scored 200 points in the test? What is the student score must be in order in the 90 percentile?
find the average and the sd for the list 11 15 9 7 3. using the average and sd you found convert the values in the list
Is there sufficient evidence to indicate that the mean annual percentage turnover for U.S. plants exceeds the corresponding mean percentage for Japanese plants?
The Ledd Pipe Company has received a large shipment of pipes, and a quality control inspector wishes to estimate the average diameter of these pipes.
Calculate a four-quarter weighted moving average for the number of America Online (AOL) subscribers for the nine quarters of data. The data are reported in thousands.
in a survey of undergraduate library usage it was found that 76 of seniors 59 of juniors 50 of sophomores and 28 of
To estimate p, we use the proportion p-hat in the sample who answer "Yes." Justify the use of a normal approximation and find the following probabilities.
in testing a certain kind of truck tire over a rugged terrain it is found that 25 of the trucks fail to complete the
What is the questionnaire score that separates customers who are considered risk averse from those who are not? Carry your intermediate computations to at least four decimal places. Round your answer to at least one decimal place.
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