The keyword is "sum" which tells you x, y, and z are being added. One half of the sum means that the sum of the three numbers is going to be divided by 2.
x + y + z
------------
2
N 2-1 < 3
n is equal to :
2-1 = 1 so n would have to be 1 in order to be less than 3
Step-by-step explanation:
B. 426 people per square. mile
There are 15 girls in the classroom
Answer:
The confidence interval is 
Step-by-step explanation:
From the question we are told
The sample proportion 
The margin of error is 
The confidence interval for p is mathematically represented as

=> 
=> 