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Problem

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Textbook Expert
Textbook ExpertVerified Tutor
20 Dec 2021

Given information

Probability of dying of lung cancer was about the same as for those who had never smoked.

Step-by-step explanation

Step 1.

Since we are dealing with the test of quit smoking studied on people under 49 age.

Therefore it's a case of testing of population proportion i.e. (f.) single proportion

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