The area is 7 units squared.
3-1 = 2
5--2 = 7
2x7 = 14
14/2 = 7
Answer:
X= -2/3, 4
Step-by-step explanation:
The Minimum sample size table is attached below
Answer:
Step-by-step explanation:
From the question we are told that:
Confidence Interval 
Variance 
Generally going through the table the
Minimum sample size is
Answer:
160
Step-by-step explanation:
If there were only 2 options, all the people who didn't pick one chose the other one.
So if 25% of the people voted for the aquarium the remaing 75% voted for the zoo.
Since three times as many people voted for the zoo, we can see that 120/3=40, so 40 people chose the aquarium.
To find the total number of students, we add 120 and 40 to get <u>160</u>
