Question 4 Select one answer. In April and May of 2011, the Pew Research Center

Question

Question 4 Select one answer. In April and May of 2011, the Pew Research Center surveyed cell phone users about voice calls and text messaging. They surveyed a random sample of 1914 cell phone users. 75% of the sample use text messaging. 10 points The 95% confidence interval is (73.1%, 76.9%) which of the following is an appropriate interpretation of the 95% confidence interval? O There is a 95% probability that the proportion of all cell phone users who use text messaging is between 73.1% and 76.9%. Owe can be 95% confident that the proportion of the sample who use text messaging is between 73.1% and 76.9%. O 95% of samples will have between 73.1% and 76.9% of respondents who use text messaging. A. B. C. we can be 95% confident that the proportion of all cell phone users who use text messaging is between 73.1% and 76.9%. D.

Explanation / Answer

95% confidence interval is always tells us about population mean, poppopulation standard deviation or variance,population proportion and so on..

Eg: we 95% confident confident that the population mean or population proportion is lies between so and so values. So

B) We can be 95% confident that the proportion of all cell phone users who use text messaging is between 73.1% and 76.9%.

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