An interactive poll found that 340 of 2,284 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 90% 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? (a) p= (Round to three decimal places as needed.) (b) Construct the 90% confidence interval. Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. A. Lower bound: Upper bound: (Round to three decimal places as needed.) O B. The requirements for constructing a confidence interval are not satisfied. (c) Construct the 98% confidence interval. Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. O A. Lower bound: Upper bound: (Round to three decimal places as needed.) O B. The requirements for constructing a confidence interval are not satisfied. (d) Choose the correct answer below. A. Increasing the level of confidence narrows the interval. O B. Increasing the level of confidence widens the interval. C. Increasing the level of confidence has no effect on the interval. O D. It is not possible to tell the effect of increasing the level of confidence on the width of the Interval since the requirements for constructing a confidence interval in parts (b) and (c) were not met