Answer: 191
Step-by-step explanation:
Formula to find the minimum sample size required to estimate a population proportion or percentage:

, where
= proportion estimated by prior study.
E= Margin of error.
z* = Critical z-value.
Given : Confidence level = 95%
Critical value for 95% confidence = z*=1.96

E= 7%= 0.07
Then, 


Hence, the minimum sample size required=191
Answer:
Step-by-step explanation:
24/32=3/4
Answer:
im pretty sure the answers are
A) 6
b) 10
The answer is choice 4, they add up to 180°