The use of the Internet is constantly growing. How many randomly selected adults must be surveyed to
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The use of the Internet is constantly growing. How many randomly selected adults must be surveyed to estimate the percentage of adults in the United States who now use the Internet? Assume that we want to be 99% confident that the sample percentage is within two percentage points of the true population percentage.
a. Assume that nothing is known about the percentage of adults using the Internet.
b. As of this writing, it was estimated that 73% of adults in the United States use the Internet (based on a Pew Research Center poll).
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