According to a Pew Research Center study, in May 2011, 44% 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 316 community college students at random and finds that 168 of them have a smart phone. Then in testing the hypotheses: H 0 : p = 0.44 versus H a : p > 0.44, what is the test statistic? z = . (Please round your answer to two decimal places.)
According to a Pew Research Center study, in May 2011, 44% of all American adults had...
According to a Pew Research Center study, in May 2011, 30% 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 422 community college students at random and finds that 140 of them have a smart phone. Then in testing the hypotheses: H 0 : p = 0.3 versus H a :...
According to a Pew Research Center study, in May 2011, 44% 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 437 community college students at random and finds that 195 of them have a smart phone. Then in testing the hypotheses: H0: p = 0.44 versus Ha: p > 0.44, what...
According to a Pew Research Center study, in May 2011, 31% 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 352 community college students at random and finds that 129 of them have a smart phone. In testing the hypotheses: H 0 : p = 0.31 versus H a : p...
According to a Pew Research Center study, in May 2011, 32% 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 the Internet). A communications professor at a university believes this percentage is higher among community college students. She selects 344 community college students at random and finds that 132 of them have a smart phone. Then in testing the hypotheses:...
According to a Pew Research Center study, in May 2011, 44% of all American Type numbers in the boxes. adults had a smart phone (one which the user can use to read email and surf 10 points the Internet). A communications professor at a university believes this percentage is higher among community college students. She selects 344 community college students at random and finds that 159 of them have a smart phone. Then in testing the hypotheses: H: P =...
According to a Pew Research Center study, in May 2011, 31% 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 352 community college students at random and finds that 129 of them have a smart phone. In testing the hypotheses: H 0 : p = 0.31 versus H a : p...
According to a Pew Research Center study, in May 2011, 30% 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 441 community college students at random and finds that 140 of them have a smart phone. Then in testing the hypotheses: H0: p = 0.3 versus Ha: p > 0.3, what...
According to a Pew Research Center study, in May 2011, 39% 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 317 community college students at random and finds that 143 of them have a smart phone. Then in testing the hypotheses: H0: p = 0.39 versus Ha: p > 0.39, what...
According to a Pew Research Center study, in May 2011, 37% 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 465 community college students at random and finds that 176 of them have a smart phone. Then in testing the hypotheses: H0: p = 0.37 versus Ha: p > 0.37, what...
According to a Pew Research Center study, in May 2011, 32% 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 314 community college students at random and finds that 110 of them have a smart phone. Then in testing the hypotheses: H0: p = 0.32 versus Ha: p > 0.32, what...