5

Let x be per capita income in thousands of dollars. Let y be the number of medical doctors per 10,000 residents. Six small citie

MAVERICK [17]

Answer:

The percentage of variation esplained by the model is given by the determination coefficient, on this case:

$R^2 = 0.934^2 =0.872$

And we have 87.2% of the variation explained by the linear model given.

$\hat y = 5.756(8.5) -36.895=12.031$

And we have 12.031 doctors per 10000 residents.

Explanation:

Assuming the following dataset:

x y

8.6 9.6

9.3 18.5

10.1 20.9

8.0 10.2

8.3 11.4

8.7 13.1

Assuming this question: "The data has a correlation coefficient of r = 0.934. Calculate the regression line for this data. What percentage ofvariation is explained by the regression line? Predict the number of doctors per 10,000 residents in a town with a per capita income of $8500."

We want a linear model like this:

$y = mx +b$

Where m represent the slope and b the intercept for the linear model. And we cna find the slope and b with the following formulas:

$m = \frac{n \sum xy - \sum x \sum y}{n \sum x^2 -(\sum x)^2}$

$b = \frac{\sum y}{n} -m \frac{\sum x}{n}$

And from the dataset we have the following values:

$n= 6, \sum x =53, \sum y = 83.7 , \sum xy = 755.89, \sum x^2 = 471.04$

And replacing into the equation for m we got:

$m =\frac{6(755.89) - (53)(83.7)}{6(471.04) -(53)^2}=5.756$

And the intercept:

$b = \frac{83.7}{6}-36.895 5.756 \frac{53}{6}=-36.895$

And then the linear model is given by:

$\hat y = 5.756 x -36.895$

We can find the estimation replacing x = 8.5 into the linear model and we got:

$\hat y = 5.756(8.5) -36.895=12.031$

And we have 12.031 doctors per 10000 residents.

The percentage of variation esplained by the model is given by the determination coefficient, on this case:

$R^2 = 0.934^2 =0.872$

And we have 87.2% of the variation explained by the linear model given.

4 0

2 years ago

The management of Kabanuck Corporation is considering dropping product V41B. Data from the company's accounting system appear be

Makovka662 [10]

Answer:

$191,500

Explanation:

If the item is not dropped:

Loss = Sales - Variable expenses - Fixed manufacturing expenses - Fixed selling and administrative expenses

= $923,000 - $405,500 - $337,000 - $244,000

= (63,500) loss

Fixed mfg. expenses remaining:

= Fixed manufacturing expenses - Avoidable Fixed manufacturing expenses

= $337,000 - $207,500

= $129,500

Fixed selling and administrative expenses remaining:

= Fixed selling and administrative expenses - Avoidable Fixed selling and administrative expenses

= $244,000 - $118,500

= $125,500

Loss in expenses remaining if item is dropped :

= Fixed mfg. expenses remaining + Fixed selling and administrative expenses remaining

= $129,500 + $125,500

= ($255,000)

Overall net operating income would decrease by:

= Loss in expenses remaining if item is dropped - Loss in expenses if item is not dropped

= $255,000 - $63,500

= $191,500

5 0

3 years ago

Newtech Inc. hires John for the position of a software programmer to work on their new project. Salary paid to John by Newtech I

mote1985 [20]

Answer:

Direct Cost.

Explanation:

As Newtech Inc. has hired John for the position of a software programmer to work on their new project. Salary paid to John by Newtech Inc. would be direct cost. Direct costs are the costs which can be tied directly to the manufacturing of products and services and they can be traced very easily as well. Labor cost, commissions, manufacturing supplies, direct material are the direct costs which can traced back to the manufacturing products quite easily.

3 0

3 years ago

Trusting others on the job can be dangerous

borishaifa [10]

Sometimes ? But some jobs involve trusting your co workers

6 0

3 years ago

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Sarah Parks is in the very early stages of putting together a business startup, and is thinking about writing a business plan to

Reptile [31]

Answer:

C. Summary business plan

Explanation:

A "business plan" is very important in order for a person to assess the success of his business. Among the choices above, the best answer is the "Summary business plan." This allows the entrepreneur to summarize the important points needed and to provide solid case of his business idea. This should also be clear and concise because it is going to be read by people who will be investing in the business. Examples of these groups are the banks and investors.

For startup business, it is important to include the following in the summary business plan: business opportunity, target market, business model, marketing and sales strategy, financial analysis, competition, implementation plan, owners/staff, etc.

So, this explains the answer.

4 0

3 years ago

Read 2 more answers