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Answer: 0.84
Step-by-step explanation:
let p be the population proportion of adults who smoked a cigarette in the past week.
As per given , we have
Sample size : n= 1491
The sample proportion of adults smoked a cigarette=
The test statistic for proportion is given by :-
Substitute all the values , we get
Hence, the value of the test statistic = 0.84