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. the 95% confidence interval is (73.1%, 76.9%). which of the following is an appropriate interpretation of the 95% confidence interval? a. there is a 95% probability that the proportion of all cell phone users who use text messaging is between 73.1% and 76.9%.

b. we can be 95% confident that the proportion of the sample who use text messaging is between 73.1% and 76.9%.

c. 95% of samples will have between 73.1% and 76.9% of respondents who use text messaging.

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