USA Today reported the results of a survey conducted by HarrisInteractive to determine the percentage of adults
Question:
a. Calculate the sample proportion of adults who connect to the Internet using a computer.
b. If the Harris poll’s estimate of the proportion of adults using the Internet is correct, determine the sampling error for the sample in the Online file.
c. Determine the probability that a sample proportion would be at most as far away as the Online sample if the Harris poll’s estimate was correct.
d. The Harris poll indicated that its sample had a margin of error of ± 2, . The sample size used by the Harris poll was 2,022. Calculate the probability that the sample proportion from a sample size of 2,022 would be at most as far away from the population proportion as suggested by the margin of error.
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Related Book For
Business Statistics A Decision Making Approach
ISBN: 9780133021844
9th Edition
Authors: David F. Groebner, Patrick W. Shannon, Phillip C. Fry
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