Concept explainers
(a)
To find: The linear model, an exponential model and power model of the data.
(a)
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Answer to Problem 122CR
Linear model:
Exponential model:
Power model:
Explanation of Solution
Given:Each ordered pair
Using graphing regression calculator to find the model.
Linear model:
Equation,
Determination coefficient,
Exponential model:
Equation,
Determination coefficient,
Power model:
Equation,
Determination coefficient,
(b)
To graph: The linear model, an exponential model and power model of the data.
(b)
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Explanation of Solution
Given: Each ordered pair
Using graphing utility to graph linear model.
Graph exponential model.
Graph power model,
(c)
To describe: The best fit model of the data.
(c)
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Answer to Problem 122CR
Power model:
Explanation of Solution
Given: Each ordered pair
Using graphing regression calculator to find the model.
Linear model:
Equation,
Determination coefficient,
Exponential model:
Equation,
Determination coefficient,
Power model:
Equation,
Determination coefficient,
The coefficient of determination of power model is more nearest to 1 as compare to linear and exponential mode.
Therefore, power model is best fit for given data.
(d)
To describe: The best fit model of the data.
(d)
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Answer to Problem 122CR
2072-2073
Explanation of Solution
Given: Each ordered pair
The best fit model Equation,
In which year number of female will be 4 million.
As N represents number of female in thousands.
So, 4 million = 4000 thousands
So put
So,
Chapter 3 Solutions
EP PRECALC.GRAPHING APPR.-WEBASSIGN-1YR
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