According to an estimate, 75% of cell phone owners in a large city had smart phones in
Question:
According to an estimate, 75% of cell phone owners in a large city had smart phones in 2014. In a recent sample of 1000 cell phone owners selected from this city, 790 had smart phones. At a 2% significance level, can you conclude that the current proportion of cell phone owners in this city who have smart phones is different from .75?
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Step 1 H 0 p 075 H 1 p 075 Step 2 np 1000075 750 5 and nq 1000025 250 5 Since np 5 ...View the full answer
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