A health magazine reported that 27% of adult males smoke cigarettes.
A health magazine reported that 27% of adult meals smoke cigarettes. A competing magazine thinks this claim is false. To test this claim, they select 40 adult meals at random and record if they smoke cigarettes. They calculate a 95% confidence interval for the proportion of adult males who smoke and find it is 0.22 to 0.28.
a) what is the point estimate used to create this confidence interval?
b) what is the margin of error used to create this confidence interval?
c) based on the confidence interval, it is plausible that the true proportion of adult males who smoke cigarettes is 27%?