In a Nanos Research survey of 6000 Canadian adults about how favourable they were towards the Alberta oil sands project, 22% were favourable and 30% were somewhat favourable. Of those who were favourable, 25% agreed that the oil sands project creates jobs, whereas the corresponding percentage for those who were somewhat favourable was 15%. Calculate the lower limit of a 90% confidence interval for the difference between those who were favourable and those who were somewhat favourable as to whether the oil sands project creates jobs. 0 0.0519 0 0.0379 0 0.0760 0 0.0684 0 0.0427 0 0.0223