How do I calculate the test statistic Z0 = ? A survey of 3014 adults, a poll asked people whether they smoked cigarettes and whether they always wear a seat belt in a car. The below data shows the results of the survey.
Smoke No Seatbelt (Success) 56 Seatbelt (Failure) 449
Don't Smoke No Seatbelt (Success) 334 Seatbelt (Failure) 2165
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