Mathematics, 13.11.2019 03:31, mshepherdmiller
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%.
Answers: 2
Mathematics, 21.06.2019 16:20, whitewesley124
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Mathematics, 21.06.2019 20:30, wednesdayA
Evaluate the expression for the given value of the variable. | ? 4 b ? 8 | + ? ? ? 1 ? b 2 ? ? + 2 b 3 -4b-8+-1-b2+2b3 ; b = ? 2 b=-2
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In april and may of 2011, the pew research center surveyed cell phone users about voice calls and te...
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