There were 20 people in a bar. 10 people left. Then 4 more people left. 6 people were left
Answer: 271.
Step-by-step explanation:
When the prior population proportion of success is not available, then the formula to find the sample size is given by :-

Given : Significance level : 
By using the standard normal distribution table ,
Critical value : 
Margin of error : 
Then , the required minimum sample size will be :-

Hence, the required minimum sample size is 271.
Answer:
y31
Step-by-step explanation:
aM×aN=aM+N
so. y3+8+1+7+12=y31