Answer:
Probably unequal ( B )
Step-by-step explanation:
<u>experimental group = 10</u>
using 85% ethanol gasoline
mean = 240 pounds per 100 miles
standard deviation = 20 pounds
<u>control group = 14 vehicles </u>
using regular gasoline
mean = 252 pounds per 100 miles
standard deviation = 15 pounds
comparing the sample variance of each group shows that they are probably unequal using the equation below
Variance for a sample set of data = ∑ ( x - X ) ^2 / n - 1
where n = number of events
X = mean value
x = value of events
Answer:
Step-by-step explanation:
Equation of the line y = mx + c
The new line is perpendicular to 2x - 3y = -5
- 3y = - 5 - 2x
3y = 2x + 5
y =
Since the lines are perpendicular to each other : 
where
.
Slope of the given line

Slope of the new line

The equation to the new line passing through (-4, -3) and perpendicular to 2x - 3y = -5

Answer:
Mean
Step-by-step explanation:
The mean is the average so practically meaning most in this case.
Not muslim but felt like I could help
Assuming I see a force F acting on an object at an angle theta with the horizontal pushing it through a rough surface over a distance L such that the horizontal component is just required to overcome friction.
Then work done is
W=FLcos(theta)
(Read assumptions above due to lack of diagram)
Answer:
Y=3x+4
Step-by-step explanation:
Slope =3
Then y=3x+c
The point pass through (0,4) then put x=0 and y=4
4=3(0)+c
Then c=4
The equation is y=3x+4