A vehicle's fuel economy is affected by its speed. The data on Spaller Auto's most popular vehicle is shown in the table below w
here x is the speed (mph) and F(x) is the fuel economy (mpg). Calculate the rate of change for the interval 40 ≤ x ≤ 50.
A. 5.55 mpg/mph
B. -0.18 mpg/mph
C. -5.55 mpg/mph
D. 0.18 mpg/mph
A. 5.55 mpg/mph
B. -0.18 mpg/mph
C. -5.55 mpg/mph
D. 0.18 mpg/mph
2 answers:
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Answer:
1) Please see the required graph created with Microsoft Excel
2) No
Step-by-step explanation:
The given parameters are;
From the given equation, we have;
When x > 4, or x -2 <, y < 0, which gives;
y > 0 for -2 < x < 4
Therefore, the graph is opened in the downward direction with the peak at the point with coordinate (1, 3)
The legs of the graphs are straight lines with slopes = -1, and 1 respectively, before and after the maximum point of the graph
The table of values used to sketch the graph with Microsoft Excel is given as follows;
x y
-3 -1
-2 0
-1 1
0 2
1 3
2 2
3 1
4 0
5 -1
Tis very straightforwards, we simply multiply the numerators and denominators,
The empirical rule says that approximately 68% of a normal distribution falls within one standard deviation of the mean; 95% within two standard deviations; and 99.7% within three standard deviations.
The interval (500, 700) is half of the portion of the distribution that falls within two standard deviations of the mean (the whole portion being the interval (300, 700)). So, the desired probability is
.
The interval (500, 700) is half of the portion of the distribution that falls within two standard deviations of the mean (the whole portion being the interval (300, 700)). So, the desired probability is