A food distributor conducts regular surveys of consumer spending on its products. The average weekly household spending (in doll
ars) on regular pasta and gluten-free pasta for each of 12 states was recorded. A scatterplot of spending on regular pasta versus gluten-free pasta is shown. Which of the following statements is true?
Graph shown below
A. Point (7.2, 10) is an outlier.
B. There is clear evidence of a negative association between spending on gluten-free pasta and regular pasta.
C. The equation of the least-squares regression line for this plot is approximately ŷ = 3.8 + two thirds times x.
D. The correlation for these data is r = 1.
E. The observation in the upper right corner of the plot is influential for the least-squares regression line.
Graph shown below
A. Point (7.2, 10) is an outlier.
B. There is clear evidence of a negative association between spending on gluten-free pasta and regular pasta.
C. The equation of the least-squares regression line for this plot is approximately ŷ = 3.8 + two thirds times x.
D. The correlation for these data is r = 1.
E. The observation in the upper right corner of the plot is influential for the least-squares regression line.
1 answer:
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a. ×
A
b. ×
A
c. A
The LED which would glow brightest is LED C with the greatest current and voltage
The LED which would be the most dim is LED B with low voltage and consequently low current.
<h3>How to determine the current</h3>The formula for finding current
I = V/R
Where v = voltage
R = resistance
A. V = 12V
R = 4. 7 + 15 = 19. 7 kΩ = 19700 Ω in series
×
A
B. V = 9V
R = 4. 7 + 1 = 4. 7 kΩ = 4700Ω in series
×
A
C. V= 12V
1/R = =
×
R = = 310. 56 Ω
A
It is important to note that the brightness of a bulb depends on both current and voltage depending on whether the bulb it is in parallel or series.
The LED which would glow brightest is LED C with the greatest current and voltage
The LED which would be the most dim is LED B with low voltage and consequently low current.
Learn more about Ohms law here:
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