Canada has much stronger gun control laws than the united states, and canadians support gun control more strongly than do americans. a sample survey asked a random sample of 1505 adult canadians, do you agree or disagree that all firearms should be registered?
of the 1505 people in the sample, 1288 answered either agree strongly or agree somewhat.

nonetheless, act as if we have an srs from adults in the canadian provinces.
give a 95% confidence interval for the proportion who support registration of all firearms.

(a) 0.8460 to 0.8656
(b) 0.8325 to 0.8791
(c) 0.7324 to 0.9792
(d) 0.8381 to 0.8736

Option D) 0.8381 to 0.8736  

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 1505

Number of people who answered, x = 1288

Confidence interval:

Putting the values, we get:

Option D) 0.8381 to 0.8736

32/80  

91/140

the last one 54 doesn't go into 45. 54/100 ?

step-by-step explanation:

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional