An interactive poll found that 350 of 2393 adults aged 18 or older have at least one tattoo.
A. Obtain a point estimate for the proportion of adults who have at least one tattoo.
B. Construct a 95% confidence interval for the proportion of adults with at least one tattoo.
C. Construct a 98% confidence interval for the proportion of adults with at least one tattoo.
D. What is the effect of increasing the level of confidence on the width of the interval?