Answer: The size of sample of 193 is needed.
Step-by-step explanation:
Since we have given that
Margin of error = 6%
At 90% confidence level, z = 1.645
Let p = 0.5
and q = 0.5
( because it is the most conservative estimation).
So, using formula, we get :

Hence, the size of sample of 193 is needed.
To find X you need to square root 160 and X so your answer should be 12.6 which is rounded. Tell me if this helps
X = width
2x = length
2x + 4x = 48
6x = 48
x = 8
2x = 16
8*16 = 128
Your answer should be that the area is 128 square yards. Hope this helps!
Answer:
The Euclidean distance between the two given points is
.
Step-by-step explanation:
K-NN is used to predict the variable y for a new point with 
Distance is calculated in the Euclidean sense.
The Euclidean distance between two points is given by the formula:

The point is 
The Euclidean distance between the two points is given by:

Thus, the Euclidean distance between the two given points is
.