Online harassment. A pew research poll asked us adults aged 18-29 and 30-49 whether they have personally experienced harassment online. A 95% confidence interval for the difference between the proportions of 18-29 year old and 30 -39 year olds who have personally experienced harassment online [p18-29-p30-49] was calculated to be (0.115, 0.185). Based on this information, determine if the following statement are true or false a. We are 95% confident that the true proportion of 18-29- years old who have personally experienced harassment online is 11.5% to 18.5% lower than the true proportion of 30-49-years olds who have personally experienced harassment online.