Answer: (0.63, 7.07)
Step-by-step explanation:
The confidence interval for population proportion is given by :-

Given :
; 
Significance level : 
Critical value : 
Now, a 90% confidence interval for population proportion will be :-

Hence, a 90% confidence interval for population proportion = (0.63, 7.07)
X=2
Y=4
There are more than 1 solution
R=2.1
Diameter would be half of that
Answer:
mr hill: 9
mr chang: 12
Step-by-step explanation:
mr hill can have 3 teams of 9 and
mr chang can have 2 teams of 12