Mathematics, 19.12.2019 04:31 kkcheers16
According to a pew research center study, in may 2011, 38% of all american adults had a smart phone (one which the user can use to read email and surf the internet). a communications professor at a university believes this percentage is higher among community college students. she selects 366 community college students at random and finds that 160 of them have a smart phone. then in testing the hypotheses: h 0 : p = 0.38 versus h a : p > 0.38, what is the test statistic? z = . ( round your answer to two decimal places.)
Answers: 3
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Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?
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According to a pew research center study, in may 2011, 38% of all american adults had a smart phone...
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