Im sorry i need the point but I’ll calculated later once I’m done
1. 28.57
2. 16
Hope this is right.
Answer: 
Step-by-step explanation:
The confidence interval for population proportion is given by :-

Given : Sample size : n= 2500
Number of people gave a positive answer = 1750
Then , Proportion of people gave a positive answer =
Significance level :
Critical value : 
Now, the 90% two-sided confidence interval on the proportion of people who regularly have a dental checkup will be :-

Jane : 6
Lane : 3
Neesa : 213
So I think Jane is 6 inches tall or 1-1/5
My answer can be incorrect also so refer to Chrome too.