Question details

BA 578 SUMMER I 2016
$ 49.99

BA 578 SUMMER I 2016

BA 578 SUMMER I 2016

 

 

  • There are 4 parts:

Part A: Fill in the blank (1-26)

Part B: Write your answers (27-50)

Part C: Fill in the blank and circle your answers (51-53)

Part D: Explaination (54-55)

Part E: Work Problem (56-65)  **This part all work must be shown step by step**

 



Page 1 of 11

Name: __________________________

ID:



______________________



Online Exam

There are 4 parts:

Part A: Fill in the blank (1-26)

Part B: Write your answers (27-50)

Part C: Fill in the blank and circle your answers (51-53)

Part D: Explaination (54-55)

Part E: Work Problem (56-65) **This part all work must be shown step by step**



**Excel is not acceptable for this test





**Part E: All work must be shown step by step in order to

receive full credit



Part A: Fill in the blank (1-26)

1) The purpose of hypothesis testing is to aid the manager or researcher in reaching a (an)

__________________ concerning a (an) _______________ by examining the data contained in a (an)

_______________ from that ____________________.

2) A hypothesis may be defined simply as __________________________________________.

3) There are two statistical hypotheses. They are the _________________ hypothesis and the

_________________ hypothesis.

4) The statement of what the investigator is trying to conclude is usually placed in the

_________________ hypothesis.

5) The _____________ hypothesis is the hypothesis that is tested.

6) If the null hypothesis is not rejected, we conclude that the alternative _________________.

7) If the null hypothesis is not rejected, we conclude that the null hypothesis _____________.

8) A Type I error occurs when the investigator _____________________________.

9) A Type II error occurs when the investigator _____________________________ .

10) The probability of committing a Type I error is designated by the symbol ____________, which is also

called the ___________________.

11) Values of the test statistic that separate the acceptance region from the rejection are called

_________________ values.

12) The following is a general statement of a decision rule: If, when the null hypothesis is true, the

probability of obtaining a value of the test statistic as____________ as or more _______ than that

actually obtained is less than or equal to , the null hypothesis is____ _________. Otherwise, the null

hypothesis is ______________________ .

13) The probability of obtaining a value of the test statistic as extreme as or more extreme than that



BA 578 SUMMER I 2016



14)



15)



16)

17)

18)

19)

20)

21)

22)

23)

24)



25)



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actually obtained, given that the tested null hypothesis is true, is called ____________ for the

________________test.

When one is testing H0: µ= µ0 on the basis of data from a sample of size n from a normally

distributed population with a known variance of σ 2 , the test statistic is

____________________________________________________.

When one is testing H0: µ= µ0 on the basis of data from a sample of size n from a normally

distributed population with a unknown variance, the test statistic is

___________________________________________________.

The null hypothesis contains a statement of __________________________________.

The statement µ ≥ 0 is an inappropriate statement for the ____________ hypothesis.

The rejection region consists of those values of the ______________ that will cause rejection of the

null hypothesis.

The null hypothesis and the alternative hypothesis are ____________ of each other.

Given , H0: µ= µ0, then Ha : ___________________________________ .

Given H0: µ ≤ µ0, then Ha : ___________________________________ .

Given H0: µ ≥ µ0, then Ha : ___________________________________ .

A statement of what you wish to conclude goes in the ______________.

A market analyst believes that more than 30% of the adults in a certain area regularly read a certain

magazine. The analyst wishes to conduct a hypothesis test to see whether this belief will be

supported. The appropriate statistical hypotheses are: __________________.

Given: H0: µ ≥ 50; Ha: µ < 50; α = 0.05. A simple random sample of size 64 is drawn from a nonnormally distributed population.



X´ = 45, s2 = 256. The computed value of the test statistic is



_________________, which is compared for significance with a value from the

____________________ distribution.

26) Given: H0: µ= 100; Ha: µ ≠ 100; α = 0.03; computed z = 2.25, p = 0.0244. The null hypothesis

should reject because __________________________________________.



Part B: Use questions number 27-50 from page 9-54 to 9-57 to

write your answer below



(27-50).



27



35



43



28



36



44



29



37



45



30



38



46



31



39



47



32



40



48



33



41



49



34



42



50



BA 578 SUMMER I 2016



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Part C: Please fill in the blank and circle your decision or answer

the following questions (51-53).

51. State whether you would reject or fail to reject the null hypothesis in each of the following cases

(two-tailed): Make a decision.



a)

P = 0.12 ;



α =0.05



Decision

Reject / Fail to reject



P = 0.001 ;



α =0.01



Decision

Reject / Fail to reject



b)



52. State whether



H0



should be accepted or rejected for



α =0.05 , given the following;



F¿ =computed F (circle your decision)

a)

F¿ = 2.34; df = 2 and 11



Decision

Reject / Fail to reject



F¿ = 4.29; df = 3 and 24



Decision

Reject / Fail to reject



b)



53. Given the following, complete the ANOVA table and make the correct inference. Using F-value to

make a decision.

Source

Treatments

Error

Total



SS

____

____

40.98



df

2

17

____



MS

3.24

____



F

____



ANSWER

a) What is the hypothesis being tested in this

problem?

b) In the above ANOVA table, is the factor

significant at the 5% level?

c) Number of observations?



Part D: Explain below



(54-55)



54. What does the constant term capture in the equation?



BA 578 SUMMER I 2016



Page 4 of 11



55. What does the error term capture in the equation?



Part E: Must show all your work step by step in order to receive

the full credit; Excel is not allowed



(56-65).



56. Given the following probabilities, find Z 0 and please draw the shading the area



a.



P



Show your work

Z



Z

(

0 ) =0.0060



b.



−1.67 ≤ Z ≤ Z 0 ) =0.8844

P (



c.



Z> Z 0 )=0.0455

P (



d.



Z ≤ Z ≤3.02 ) =0.0009

P ( 0



e.



Z> Z 0 )=0.7224

P (



f.



Z ≤ Z ≤ Z 0 )=0.9876

P ( 0



Please draw graphs



BA 578 SUMMER I 2016



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57. Work on problem number 28 (a-d) on page 7-26

a)



b)



c)



d)



a)



58. Work on problem number 13 (a-c) on page 7-48

b)



c)



BA 578 SUMMER I 2016



a)



Page 6 of 11



59. Work on problem number 15 (a-c) on page 7-67

b)



c)



60. Use problem number 12 on page 8-11 to answer the following questions (a-d)

a) Mean



b) Variance



c) Standard deviation



d) Find a 90% confidence interval for the mean μ.

Interpret this interval



BA 578 SUMMER I 2016



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61. Please fill in the computer printout and answer the following questions (a-b).

Given that α=0.05

SUMMARY OUTPUT

Regression Statistics

Multiple R



0.9037



R Square



______



Adjusted R Square



______



Standard Error



______



Observations



______



ANOVA

df



SS



MS



F



Significance F



Regression



1



4.9



______



______



0.03535



Residual



3



1.1



Total



______



______



______



Coefficients



Standard

Error



t Stat



P-value



Lower95%



Upper 95%



Lower 95.0%



Upper 95.0%



Intercept



-0.1



______



-0.15746



0.88488



______



______



______



______



X1



0.7



______



3.65563



0.03535



______



______



______



______



a) Predicting Y given that X=5; confidence interval



α =0.05



b) Estimating mean given that X=5; confidence interval



α =0.05



BA 578 SUMMER I 2016



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62. The following regression equation was obtained using the five independent variables.

Given that



α =0.05



a)



What percent of the variation is explained by the

regression equation?



b)



What is the standard error of regression?



c)



What is the critical value of the F-statistic?



d)



What sample size is used in the print out?



e)



What is the variance of the slope coefficient of income?



f)



Conduct a global test of hypothesis to determine if any of the regression coefficients are not zero.



g)



Conduct a test of hypothesis on each of the independent variables. Would you consider eliminating outlets



BA 578 SUMMER I 2016



Page 9 of 11



and bosses?



63. Work on problem 3 on page 10-28 (a-d)

a)



b)



c)



d)



64. An ad agency asks each member of a random sample of 60 viewers to indicate which of six

television programs he or she prefers. Let



α=0.05



Program



1



2



3



4



5



6



Total



Number



5



8



10



12



12



13



60



a) Is the χ2 value significant at 5% level of significant?



b) Write the conclusion for this question



BA 578 SUMMER I 2016



65. Work on problem 10 on page 15-10

a) What is you hypothesis testing



b) What is your



χ2 ?



c) Is the χ2 value significant at the 5 % level of significance?



Page 10 of 11



BA 578 SUMMER I 2016



d) Write the conclusion for this question.



Page 11 of 11

Available solutions
  • BA 578 SUMMER I 2016
    $49.99

    BA 578 SUMMER I 2016 Pin It BA 578 SUMMER I 2016 There are 4 parts: Part A: Fill in the blank (1-26) Part B: Write your answers (27-50) Part C: Fill in the blank and circle your answers (51-53) Part D: Explaination (54-55) Part E: Work Problem (56-65) **This part all work must be shown step by step** Page 1 of 11 Name: __________________________ ID: ______________________ Online Exam There are 4 parts: Part A: Fill in the blank (1-26) Part B: Write

    Submitted on: 03 Jul, 2016 12:30:28 This tutorial has not been purchased yet .