Sunlight is absorbed in water, and as a result the light intensity in oceans, lakes, and ponds decreases exponentially with depth. The percentage of visible light, P (in decimal form). at a depth of x meters is given by P = e − k x , where k Is a constant related to the clarity and other physical properties of the water. The graph shows models for the open ocean. Lake Tahoe, and Lake Erie for data taken under similar conditions. Use these models for Exercises 73-76. Determine the depth at which the light intensity is 20 % of the value from the surface for each body of water given. Round to the nearest tenth of a meter.
Sunlight is absorbed in water, and as a result the light intensity in oceans, lakes, and ponds decreases exponentially with depth. The percentage of visible light, P (in decimal form). at a depth of x meters is given by P = e − k x , where k Is a constant related to the clarity and other physical properties of the water. The graph shows models for the open ocean. Lake Tahoe, and Lake Erie for data taken under similar conditions. Use these models for Exercises 73-76. Determine the depth at which the light intensity is 20 % of the value from the surface for each body of water given. Round to the nearest tenth of a meter.
Solution Summary: The author calculates the percentage of visible light in terms of depth from the surface for ocean, Lake Tahoe, and Erie.
Sunlight is absorbed in water, and as a result the light intensity in oceans, lakes, and ponds decreases exponentially with depth. The percentage of visible light, P (in decimal form). at a depth of x meters is given by
P
=
e
−
k
x
,
where k Is a constant related to the clarity and other physical properties of the water. The graph shows models for the open ocean. Lake Tahoe, and Lake Erie for data taken under similar conditions. Use these models for Exercises 73-76.
Determine the depth at which the light intensity is
20
%
of the value from the surface for each body of water given. Round to the nearest tenth of a meter.
The cost of fuel is the largest component of cost of ownership for most vehicles. Fuel cost is (almost) inversely proportional to gas mileage; higher gas mileage means lower fuel cost and vice-versa. If you keep track of the number of miles driven on each tank of gas as well as how much gas is purchased, it is easy to calculate gas mileage; many cell phone apps exist to track this. The data in the following table is the gas mileage for Mr. Hebert's 2015 Jeep Wrangler Unlimited.
12.85
14.98
15.36
17.09
18.86
13.28
15.11
15.62
17.50
19.07
13.48
15.12
15.65
17.66
20.91
14.65
15.13
16.41
18.17
21.17
14.71
15.14
16.80
18.27
22.11
g. The manufacturer (by way of the EPA) print city, highway, and combined fuel economy on the window sticker of each new car. The combined fuel economy rating for Mr. Hebert's Jeep Wrangler is 18 MPG. From the point of view of Mr. Hebert's credit card bill, getting less than the…
The cost of fuel is the largest component of cost of ownership for most vehicles. Fuel cost is (almost) inversely proportional to gas mileage; higher gas mileage means lower fuel cost and vice-versa. If you keep track of the number of miles driven on each tank of gas as well as how much gas is purchased, it is easy to calculate gas mileage; many cell phone apps exist to track this. The data in the following table is the gas mileage for Mr. Hebert's 2015 Jeep Wrangler Unlimited.
12.85
14.98
15.36
17.09
18.86
13.28
15.11
15.62
17.50
19.07
13.48
15.12
15.65
17.66
20.91
14.65
15.13
16.41
18.17
21.17
14.71
15.14
16.80
18.27
22.11
c. Find the five number summary.
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The cost of fuel is the largest component of cost of ownership for most vehicles. Fuel cost is (almost) inversely proportional to gas mileage; higher gas mileage means lower fuel cost and vice-versa. If you keep track of the number of miles driven on each tank of gas as well as how much gas is purchased, it is easy to calculate gas mileage; many cell phone apps exist to track this. The data in the following table is the gas mileage for Mr. Hebert's 2015 Jeep Wrangler Unlimited.
12.85
14.98
15.36
17.09
18.86
13.28
15.11
15.62
17.50
19.07
13.48
15.12
15.65
17.66
20.91
14.65
15.13
16.41
18.17
21.17
14.71
15.14
16.80
18.27
22.11
e. Does this data show any skew or symmetry?
A.
Left - Skewed
B.
Right - Skewed
C.
Symmetrical
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