The online security firm SecurEnvoy and the researchfirm OnePoll conducted a survey in October 2012 andfound that 60% of Britons admit they don’t alwaysunderstand text message abbreviations they receive.The firms surveyed 1000 British adults.a) Assuming this was a simple random sample, canyou be comfortable that 60% is a good estimate of the percentage of British adults who are sometimesconfused by text abbreviations? Explain.b) Assuming this was a simple random sample, can yoube comfortable that 60% is a good estimate of thepercentage of American adults who are sometimesconfused by text abbreviations? Explain. c) It seems reasonable to suspect that age may be associ-ated with a person’s comfort with text abbreviations. How might the sampling technique be improved bytaking this association into account?d) A blog that reported a story about this poll had abanner at the bottom of the webpage with a multiplechoice question:
The online security firm SecurEnvoy and the researchfirm OnePoll conducted a survey in October 2012 andfound that 60% of Britons admit they don’t alwaysunderstand text message abbreviations they receive.The firms surveyed 1000 British adults.a) Assuming this was a simple random sample, canyou be comfortable that 60% is a good estimate of the percentage of British adults who are sometimesconfused by text abbreviations? Explain.b) Assuming this was a simple random sample, can yoube comfortable that 60% is a good estimate of thepercentage of American adults who are sometimesconfused by text abbreviations? Explain. c) It seems reasonable to suspect that age may be associ-ated with a person’s comfort with text abbreviations. How might the sampling technique be improved bytaking this association into account?d) A blog that reported a story about this poll had abanner at the bottom of the webpage with a multiplechoice question:
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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The online security firm SecurEnvoy and the research
firm OnePoll conducted a survey in October 2012 and
found that 60% of Britons admit they don’t always
understand text message abbreviations they receive.
The firms surveyed 1000 British adults.
a) Assuming this was a simple random sample, can
you be comfortable that 60% is a good estimate of
the percentage of British adults who are sometimes
confused by text abbreviations? Explain.
b) Assuming this was a simple random sample, can you
be comfortable that 60% is a good estimate of the
percentage of American adults who are sometimes
confused by text abbreviations? Explain.
confused by text abbreviations? Explain.
b) Assuming this was a simple random sample, can you
be comfortable that 60% is a good estimate of the
percentage of American adults who are sometimes
confused by text abbreviations? Explain.
c) It seems reasonable to suspect that age may be associ-
ated with a person’s comfort with text abbreviations.
ated with a person’s comfort with text abbreviations.
How might the sampling technique be improved by
taking this association into account?
d) A blog that reported a story about this poll had a
banner at the bottom of the webpage with a multiple
choice question:
taking this association into account?
d) A blog that reported a story about this poll had a
banner at the bottom of the webpage with a multiple
choice question:
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