Set up a proportion
2 x
— = —
25 700
700(2)= 25(x)
1400/25=x
x=56
Answer: 
Step-by-step explanation:
Given : Population mean : 
Standard deviation : 
Sample size : n=35
Significance level : 
Critical value = 
The confidence interval for sample mean is given by :-

i.e. 

Hence, the required interval= 
Hello!
When you dividing exponents with the same base you can subtract the exponents
7 - 2 = 5
The answer is

Hope this helps!
It’s doesn’t satisfy the equation