SOLUTION: The claim is that the proportion of adults who smoked a cigarette in the past week is less than 0.25​, and the sample statistics include nequals1366 subjects with 314 saying
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Question 1125223: The claim is that the proportion of adults who smoked a cigarette in the past week is less than 0.25, and the sample statistics include nequals1366 subjects with 314 saying that they smoked a cigarette in the past week. Find the value of the test statistic.
The test statistic is?
(Round to two decimal places as needed.) Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! test statistic is a z from a 1 sample proportion
z=(p hat-0.25)/sqrt(0.25*0.75/1366)
p hat is 314/1366=0.230
z=-0.02/0.0117
=-1.71, test statistic
