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Mathematics, 07.11.2019 03:31 marialuis2732
In april and may of 2011, the pew research center surveyed cell phone users about voice calls and text messaging. they found that 55% of those who send 51 or more text messages per day prefer to be contacted by text message rather than by a voice call. the margin of error for this sample was 5.7%. what does this margin of error tell you about the results of the survey? 1. the results are off by 5.7%. 2. 5.7% of the respondents gave a fake answer. 3. the population proportion is most likely within 5.7% of the sample proportion from a randomly selected sample. 4. we are sure that population proportion is within 5.7% of the sample proportion of 55%.
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