Answer: 0.0432
Step-by-step explanation:
Formula of Margin of Error :-

Given : Sample size : n= 400
The proportion of individuals use public transportation.=
Level of confidence = 0.95
Significance level : 
Critical value : 
Substitute the values in the given formula , we get

Hence, the margin of error for the confidence interval for the population proportion with a 95% confidence level. = 0.0432
56÷14 = 4 so 18×4 = 72. The answer is 72:56
Answer:
sorry im late but the answer is C. 20.6
Step-by-step explanation:
1. x = 7
2. x = -1
3. x = 1/4, 0.25, or 2^-2
4. x = 8
5. x = 5
6. x = -15
Let me know if i got any wrong.