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
Having a good credit history impacts every one of these o teams but one.Which is the one item not impacted by good credit histor
Archy [21]
The answer is C. Anywhere to rent/buy a car or any time of loan looks at your credit history. Employers are supposed to be unbiased and fair when considering candidates for job interviews and can not discriminate based on gender, race, sexual orientation, your credit, and a few other things.
6 0
3 years ago
If Ed=2 and price decreases by 1%, by what percentage and in what direction will quantity demanded change?
Arte-miy333 [17]

<u>Given:</u>

Elasticity of Demand = 2

Decrease in price = 1%

<u>To find:</u>

Change in quantity demanded

<u>Solution:</u>

The percentage change in quantity demanded is the mathematical product of the percentage change in price and elasticity of demand. This can be mathematically represented as,

\% \text{ change in quantity demanded }=\% \text{ change in price }\times\text{Elasticity of demand }\\\\ \Rightarrow \% \text{ change in quantity demanded }=1\times2\rightarrow 2\%

Since, there is a decrease in price, the demand for the product will increase. Therefore, we can conclude that there will be 2% increase in quantity demanded

3 0
2 years ago
Scenario 14-4 The information below applies to a competitive firm that sells its output for $40 per unit.
Dominik [7]

The average revenue has the same value at Q = 150 and Q = 151.

Further explanation:

Average fixed cost: The fixed cost per unit is termed as the average fixed cost. The fixed cost does not change with the level of output. However, the average fixed cost changes along with the level of output.

Total revenue: The total revenue refers to the amount of revenue generated during a particular period of time. The total revenue is the total of the revenues.

Total cost: The total cost is the sum total of the variable and fixed cost during the year. The total cost represents all the direct, and indirect costs occurred on a product.

Average total cost: The total cost per unit is also termed as the average total cost. The average total cost represents the cost, which is computed by dividing the total cost with the number of units manufactured during the year.

Calculate the total revenue when the quantity of output is 150 units:

It is given that the output is sold at $40 per unit.

\text{Total revenue at 150 units}=\text{Number of units produced}\times\text{Sales price per unit}\\ =150\times\$40\\=\$6,000

Therefore, the total revenue when the quantity of output is 150 units is <u>$6,000.</u>

Calculate the average revenue when the quantity of output is 150 units:

\text{Average revenue}=\dfrac{\text{Total Revenue}}{\text{Number of units}}\\=\dfrac{\$6,000}{150\text{units}}\\=\$40

Therefore, the average revenue when the quantity of output is 150 units is <u>$40.</u>

Calculate the total revenue when the quantity of output is 151 units:

It is given that the output is sold at $40 per unit.

\text{Total revenue at 151 units}=\text{Number of units produced}\times\text{Sales price per unit}\\ =151\times\$40\\=\$6,040

Therefore, the total revenue when the quantity of output is 151 units is <u>$6,040.</u>

Calculate the average revenue when the quantity of output is 151 units:

\text{Average revenue}=\dfrac{\text{Total Revenue}}{\text{Number of units}}\\=\dfrac{\$6,040}{151\text{units}}\\=\$40

Therefore, the average revenue when the quantity of output is 151 units is <u>$40.</u>

Justification for correct and incorrect answer:

a.

Average fixed cost: The average fixed cost changes along with the change in output level. The average fixed cost is different from that of fixed cost. Hence, this choice is incorrect.

b.

Average revenue: The average revenue is $40 at Q = 150 units and Q = 151 units. The average revenue is equal at both the levels of the output. Hence, this choice is correct.

c.

Total cost: The total cost is not the same at both the levels of the output. The total cost is different for Q = 150 units, and Q = 151 units as the average total cost is also different for both output levels. The total cost increases when the output level changes. Hence, this option is incorrect.

Learn more

1. Breakeven point and contribution margin brainly.com/question/12989446

2. Direct materials efficiency variance brainly.com/question/12987884

3. Cost of materials

brainly.com/question/4783765

Answer details  

Grade: Senior School

Subject: Cost Accounting

Chapter: Cost Behavior

Keywords: Scenario 14-4, the information below applies to, competitive firm, scenario 14-4 the information below applies to competitive firm, when the firm produces, which of the following magnitudes, average fixed cost, average revenue, average cost per unit, average total cost, at Q = 150 and Q = 151, represent the quantity of output, refer to scenario 14-4, when the firm produces and sells 150 units of output.

6 0
3 years ago
Read 2 more answers
VitaLive has authorized the development of a video game based on new technology. Which of the following is an example of a risk
ANEK [815]

Answer:

Answer:jannwow0eouehehevhehehehehoepwowow

Answer:jannwow0eouehehevhehehehehoepwowowExplanation:

  1. Answer:jannwow0eouehehevhehehehehoepwowowExplanation:ok sjosowkbwvehdis9oq0q002o2h2bevvevevdgdghshshwhwjwiwiiw9w91929287373747r6r6fychxnznnakakww
8 0
3 years ago
In the models that describe population growth, r stands for __________.in the models that describe population growth, r stands f
Julli [10]
<span>In the models that describe population growth, R stands for per capita population growth rate. The per capital growth rate is determined by the number of births and deaths within a city, state or country. In the models, the R will represented these numbers. </span>
4 0
3 years ago
Other questions:
  • If accrued salaries were recorded on December 31 with a credit to Salaries Payable, the entry to record payment of these wages o
    11·1 answer
  • Archie Co. purchased a framing machine for $45,000 on January 1, 2021. The machine is expected to have a four-year life, with a
    10·1 answer
  • Approximately how many bankruptcy claims were filed in 2014?a. 100,000b. 250,000c. 500,000d. 1.1 millione. 2.7 million
    7·1 answer
  • It is important to be able to _______ a problem and ______ it to the provider immediately
    13·1 answer
  • 5.The real risk-free rate of interest is 2%. Inflation is expected to be 3.5% the next 2 years and 6% during the next 3 years af
    10·1 answer
  • Suppose Community Bank offers to lend you $10,000 for one year at a nominal annual rate of 6.50%, but you must make interest pay
    6·1 answer
  • Exercise 12-1 Payback Method [LO12-1] The management of Unter Corporation, an architectural design firm, is considering an inves
    6·1 answer
  • Colil Computer Systems, Inc., manufactures printer circuit cards. All direct materials are added at the inception of the product
    12·1 answer
  • Which model allows private companies to set up manufacturing units on prison grounds or purchase goods made by inmates in shops
    13·1 answer
  • Landscapers must be
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!