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Paraphin [41]
3 years ago
7

Describe a problem you face in your everyday life or at work. How might you use hypothesis testing to find a solution or improve

ment to that problem? Would you conduct a one-sample or two-sample test? What would be your null and alternative hypotheses?
Business
1 answer:
Tju [1.3M]3 years ago
4 0

Answer:

The common problem i encounter mostly is the statistical modelling problem.

In this scenario we choose best combination of independent variables for the hypothesis testing. the independent variable shows the significant effect on dependent variable so we keep it in modelling.

My null hypothesis would be that there is no significant effect of independent variable on dependent variable.  for my alternative hypothesis there exist is significant effect of independent variable on dependent variable.

Explanation:

Solution

The common problem I face daily is the statistical modelling problem which is the selection of relevant independent variable for prediction modelling.

In this example to select the best combination of independent variables we use hypothesis testing. if the independent variable has significant effect on dependent variable then the independent variable shows the significant effect on dependent variable so we keep it in modelling. In this way the model gets improved.

Since there are always two variables or two categories. hence it has a two sample test.

The Hypothesis can be shown below:

Null hypothesis:

H0:There is no significant effect of independent variable on dependent variable.

Alternative hypothesis:

Ha: There is significant effect of independent variable on dependent variable.

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Tom Noel holds the following portfolio: Stock Investment Beta A $150,000 1.40 B 50,000 0.80 C 100,000 1.00 D 75,000 1.20 Total $
exis [7]

Answer: -0.24

Explanation:

The portfolio beta is a weighted average of the betas of the individual stocks in it.

The portfolio beta before the replacement is;

= (1.4 * 150,000/375,000) + (0.8 * 50,000/375,000) + ( 1 * 100,000/375,000) + (75,000 * 75,000/375,000)

= 0.56 + 0.11 + 0.27 + 0.24

= 1.17

After the replacement, portfolio beta will be;

=  (0.75 * 150,000/375,000) + (0.8 * 50,000/375,000) + ( 1 * 100,000/375,000) + (75,000 * 75,000/375,000)

= 0.32 + 0.11 + 0.27 + 0.24

= 0.93

The change is therefore;

= 0.93 - 1.17

= -0.24

6 0
2 years ago
Arctic Air Inc. manufactures cooling units for commercial buildings. The price and cost of goods sold for each unit are as follo
hammer [34]

Answer:

See below

Explanation:

Activity rate = Overhead costs/Estimated driver

Customer service : 175 per serv. req.

Project bidding : 400 per bid

Engineering support : 750 per design change

Activity costs allocated = Activity rate × Driver consumed

Activity costs

Gough industries. 39,800

Been inc. 47,150

The Martin group. 139,300

Artic Air inc.

Customer profitability report for the year ended, December 31

Gough industries Been inc. Martin Grou

Revenues

1,800,000 960,000 240,000

Cost of goods sold

840,000 448,000 112,000

Gross profit

960,000 512,000 128,000

Selling and administrative activities:

Customer service

6,300 4,900 20,300

Project bidding

20,000 16,000 38,000

Engineering support

13,500 26,250 81,000

Total selling and administrative support

39,800 47,150 139,300

Operating income(loss)

920,200 464,850 (11,300)

3 0
3 years ago
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mojhsa [17]

Answer:

The second project should be chosen. Because the present value of the second project is greater than that of the first project.

Explanation:

The project that should be chosen can be determined by comparing the present value of both projects.

Present value is the cash flows from a project discounted at the discount rate.

Present value can be found using a financial calculator;

For project 1,

Cash flow each year from year one to six is  $52,000

Discount rate = 15%

Present value =$196,793.10

For project 2,

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Discount rate = 15%

Present value =$215,391.43

The second project would be chosen because its present value is greater than that of the first project.

I hope my answer helps you

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I feel the answer is B I really hoped this helped have an amazing day
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The correct answer for this is C. Jeb should scan the article to check if the one he's looking for is in there. This way, you can efficiently use your time and lessen your hassle on reading everything what the article has to say. 
8 0
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