Answer:
<em>95% confidence interval for the proportion of smokers who have tried to quit within the past year</em>
(0.47956 ,0.50620)
Step-by-step explanation:
<u><em>Step(i):-</em></u>
Given that National Center for Health Statistics interviewed 5409 adult smokers in 2015
Sample size 'n' = 5409
Given that 2666 of them said they had tried to quit smoking during the past year.
proportion
Q = 1 - P = 1 - 0.49288 = 0.50712
<u><em>Step(ii):-</em></u>
<u><em>95% confidence interval for the proportion of smokers who have tried to quit within the past year</em></u>
(0.49288 - 0.01332 , 0.49288+0.01332)
(0.47956 , 0.50620 )
<u><em>Final answer:-</em></u>
<em>95% confidence interval for the proportion of smokers who have tried to quit within the past year</em>
(0.47956 ,0.50620)