1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ehidna [41]
3 years ago
9

The manager of a computer software company wishes to study the number of hours senior executives by type of industry spend at th

eir desktop computers. The manager selected a sample of five executives from each of three industries. At the .05 significance level, can she conclude there is a difference in the mean number of hours spent per week by industry?
Banking Retail Insurance
12 8 10
10 8 8
10 6 6
12 8 8
10 10 10
Business
1 answer:
miskamm [114]3 years ago
4 0

Answer:

Since the calculated value of F= 5.733 falls in the critical region we reject the null hypothesis  and conclude all three means are not equal.

Explanation:

The given data is

Banking          Retail            Insurance

12                      8                        10

10                     8                          8

10                     6                          6

12                     8                           8

<u>10                    10                          10</u>

The results of excel are:            

<u><em>Anova: Single Factor  </em></u>    

     

SUMMARY      

Groups    Count Sum Average         Variance  

Column 1 5 54            10.8              1.2  

Column 2 5 40               8               2  

Column 3 5 42              8.4                 2.8  

         

1) Let the null and alternate hypotheses be

H0: u1=u2=u3  i.e all the three means are equal and

Ha: Not all three means are equal

2) The significance level is set at ∝ =0.05

3)The test statistic to use is

F= sb²/ sw²

which has F distribution with v1= k-1 →3-1=2 and v2= n-k →15-3=12 degrees of freedom

After calculations the following table is obtained.

<u><em>ANOVA  </em></u>    

Source              SS            df         MS            F        P-value        F crit

of Variation

B/w Groups        22.93         2     11.467      5.733    0.01788        3.885

<u>Within Groups       24           12           2                                                       </u>      

<u>Total                     46.93      14                                                                </u>

4) The critical region is F ≥ F(0.05, 2,12) = 3.885

5) Since the calculated value of F= 5.733 falls in the critical region we reject the null hypothesis  and conclude all three means are not equal.

You might be interested in
Auto Industries Company reported the following on its income statement:
AleksandrR [38]

Answer:

Option c. 5.25 times is the correct answer.

Explanation:

Below is the calculation:

Income before income tax = $420000

Income tax expenses = 120000 dollars

Net income = $300000

Interest expense = $80000

Interest earned ratio = Earning Before Interest and Taxes / Interest Expenses

Interest earned ratio = 420000 / 80000

Interest earned ratio = 5.25 times

Option c. 5.25 times is the correct answer.

7 0
3 years ago
In the financial projections section, the sba recommends this for the projections for the first year:______
alisha [4.7K]

In the financial projections section, the SBA recommends this for the projections for the first year quarterly or monthly projections.

<h3>Financial Projections</h3>

One of the most crucial things you can do for your business each year is to plan out and work on your company's financial projections. The process itself frequently has more significance than the outcomes, or formal projections. At a minimum, strategic planning enables you to "come up for air" from the day-to-day challenges of managing the business, assess its current state, and chart a clear way forward.

Regular planning also assists your business in adjusting to change on both an internal and external level. You are better equipped to identify issues and possibilities by routinely reevaluating your company's capabilities, markets, and competition.

To know more about "Financial Projections", visit :brainly.com/question/28007394

#SPJ4

4 0
1 year ago
As the volume of financing increases, the costs of the various types of financing will ________, ________ the firm's weighted av
charle [14.2K]
<span>As the volume of financing increases, the costs of the various types of financing will increase, raising the firms weighted average cost capital. This happens because the firm will have to pay more in fees for their financing an that will be passed on to the firms weighted average cost capital.</span>
7 0
3 years ago
An accounting firm is capable of processing 20 income tax forms per day. The average number of forms in various stages of proces
LenKa [72]

More than 3 but less than or equal to 4 days is the average processing time per income tax form.

Option - a

<u>Explanation: </u>

\text{ WIP (Work in process) }= R \times T = 64 = 20(T)

T = \frac{64}{20}  

So, T = 3.2Days

The average processing time per income tax form is more than 3 but less than or equal to 4 days.

Work in process relates to a partially completed portion of the stock of a business. The valuation of a partially finished stock is also sometimes referred to as the balance sheet products in operation, particularly when the company produces tangible goods instead of services.

6 0
3 years ago
Your business partner describes this as a high positive correlation. Is your partner correct? Why or why not? (2 points)
Nina [5.8K]

Answer:

The trend line lies on the points (0,100) and (15,900)

Explanation:

5 0
2 years ago
Read 2 more answers
Other questions:
  • Ignacio, Inc., had after-tax operating income last year of $1,197,000. Three sources of financing were used by the company: $2 m
    6·1 answer
  • Select the examples that best represent Architecture and Construction customers. Check all that apply. a supermarket company tha
    7·2 answers
  • 8. The purpose of a flexible budget is to: A. remove items from performance reports that are not controllable by managers. B. pe
    10·1 answer
  • What does an owner own if the duration of his or her rights in an estate cannot be determined?
    9·1 answer
  • Rubina is the director of procurement at Baines Corporation. She plans to send a memo to the employees in her department outlini
    5·1 answer
  • Suppose that at a price of $8, 13,600 units were sold while at a price of $6, 15,200 units were sold. Without calculating the va
    12·2 answers
  • How much time, on average, would a server need to spend on a customer to achieve a service rate of 20 customers per hour?
    8·1 answer
  • Which two actions should you take during an informational interview? a Speak with confidence when the interviewer asks a questio
    10·1 answer
  • Sanibel Autos Inc. merged with its competitor Vroom Autos Inc. This allowed Sanibel Autos to use its technological competencies
    14·1 answer
  • the graph to the right depicts the per unit cost curves and demand curve facing a shirt manufacturer in a competitive industry 2
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!