A 2005 study looked at a random sample of 800 Canadians between the ages of 18 and 24 years, and asked them the following yes or no question: "When nothing is occupying my attention, the first thing I do is reach for my phone.” 77% responded yes to this question. 1) Using the above scenario, construct and interpret a 90% confidence interval.

2) Using the above scenario, test the claim and draw the appropriate conclusion at α = 0.05 that more than 75% of all Canadians in this age group would respond "yes" to the given statement.