Answer:
20%
Step-by-step explanation:
4/5=.80
1-.80=.20
.20=20%
Answer:
0.783
Step-by-step explanation:
To find first r and then r square for the data
correlation coefficient of x and y = Cov (x,y)/std dev x * std dev Y
Cov (x,y) = E(xy) -E(x)E(y)
Hence calculations would be as follows:
x y xy
1 2 2
2 10 20
5 5 25
7 18 126
10 25 250
Mean 5 12 84.6
Cov E(xy)-E(x)E(y) 24.6
r 0.884640297
r^2 0.782588454
so answre is 0.783 after rounding off.
It takes the robot 10 mins for each task the robot can complete 6 tasks in an hour
Answer:
180ft.²
Step-by-step explanation:
If the area he paces divided by the area his apprentice paces equals three, then we can write ;
J/a = 3
In ratio form,. J : a = 3 : 1
Where J. represent John.
and. a represent the apprentice
Hence,
the area john will pace
= ( 3/4) × 280 ft.² = 180 ft.²
