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.

if you mean

then it's c. 8, -7/3

but if you mean

then it is

alright so i think for this one it would to draw it out. this may be hard for me to try and draw, but i will do my best on here:

        r

  /       |     \

notice how it forms 2 triangles inside one bigger triangle.

so if we know the angle spr is the same as psr that is saying the measure of angle p is the same as angle s. this means the big triangle psr is either isosceles or equilateral. in both cases, the triangle is perfectly symmetrical when split down the middle, which is in this case rq. because we know it is perfectly symmetrical on both sides, we know that the two triangles inside the bigger one are equal.