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
A) Using the above scenario, construct and interpret a 90% condence interval
B) Using the above scenario, test the claim and draw the appropriate conclusion at a -0.05 that more than 75% of all Canadians in this age group would respond ves" to the piven statement. 20