Answer:
(a)0.3303
(b)0.6697
Step-by-step explanation:
Point estimation is the use of sample data to calculate a single value which serves as a best estimate of a given unknown population parameter.
Total Sample=1226
Number who said that they were not confident that the food they eat in country A is safe=405.
The point estimate of those who said that they were not confident that the food they eat in country A is safe is given as 
(a)Point Estimate for p,

(b)Point estimate for q,
1- (point estimate for p)
=1-0.3303
=0.6697
it’s the 3rd one. so.. 5/8
HL congruence theorem is the answer.
Hope this helps :)
Answer:
n=35
Step-by-step explanation:
-3(n-16)= -57
-3n+48= -57
-48 -48
-3n= -105
/-3 /-3
n= 35