According to a 2010 study conducted by the Toronto-based social media analytics firmSysomos, 71% of all tweets get no reaction. That is, these are tweets that are not replied toor retweeted (sysomos website, January 5, 2015). Suppose we randomly select 100 tweets.a. what is the expected number of these tweets with no reaction?b. what are the variance and standard deviation for the number of these tweets with noreaction?

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.7: Probability
Problem 58E: What is meant by the sample space of an experiment?
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According to a 2010 study conducted by the Toronto-based social media analytics firm
Sysomos, 71% of all tweets get no reaction. That is, these are tweets that are not replied to
or retweeted (sysomos website, January 5, 2015). Suppose we randomly select 100 tweets.
a. what is the expected number of these tweets with no reaction?
b. what are the variance and standard deviation for the number of these tweets with no
reaction?

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