A survey of 270 young professionals found that oneeighth of them use their cell phones primarily for email. Can you conclude statistically that the population proportion who use cell phones primarily for email is less than 0.1.5? Use a 95% condence interval. The 95% condence interval is E, El]. As 0.15 is l: ofthe condence interval, we E conclude that the population proportion is less than 0.15. {Use ascending order. Round to four decimal places as needed.)