Answer:
a) 0.172
b) 0.167
c) 0.1404
Step-by-step explanation:
Margin of error, E = 
here,
p = probability of the event
n = sample size
a) n = 30
p = 10 ÷ 30 = 0.333
Therefore,
E = 
= 2 × 0.0861
= 0.172
b) n = 30
p = 21 ÷ 30 = 0.7
Therefore,
E = 
= 2 × 0.0836
= 0.167
c) n = 30
p = 22 ÷ 50 = 0.44
Therefore,
E = 
= 2 × 0.0702
= 0.1404
Answer:No
Step-by-step explanation:200 is 1 tenth of 2000 because 200 can go into 2000 10 times exactly. If you want to think about it this way 200 times 10 equals 2000
Answer:
No
Explanation:
Cube A surface area is : 2x2x6 (because there are 6 faces) = 24
Cube B surface area is 4x4x6 = 96
The surface area of the cube B isn't the twice of cube A's surface area
Now the volumes :
Cube A volume is 2x2x2 = 8
Cube B volume is 4x4x4= 64
Cube B's volume isn't the twice of cube A's volume
