Principles of Statistics - Statistics Assignment Help

Assignment Task

Question 1
A simple random sample of n = 300 full-time employees is selected from a company list containing the name of all N = 5,000 full employees in order to evaluate job satisfaction.
Required:
a. Give an example of possible coverage error.
b. Give an example of possible nonresponse error.
c. Give an example of possible sample error.
d. Give an example of possible measurement error.

Question 2
The following table indicates the percentage of residential electricity consumption in the United States, in a recent year organized by type of appliance:
Type of appliance Percentage (%)
Air conditioning 18
Cloth dryers 5
Clothes washers/other 24
Computers 1
Cooking 2
Dishwashers 2
Freezers 2
Lighting 16
Refrigeration 9
Space heating 7
Water heating 8
TVs and set top boxes 6
 

Required:
a. Using the most appropriate graphical method to portray these data with justification.
b. What conclusions can you reach concerning residential electricity consumption in the United States.

Question 3
The following entries describe different data associated with a legislative council member. For each data entry, indicate the corresponding level of measurement with explanation.
a. The name of the council member is Benjamin Wong
b. The member is 58 years old
c. The member’s total taxable income last year was $878,314
d. A leading news magazine surveyed that Benjamin is ranked seventh for his voting record on bills regarding public education.

Question 4
John is a lazy student. He always thinks that answering multiple-choice questions is easy as you just simply pick one of the possible answers. Tomorrow, he has a Data Analysis mid-term test. It has 30 questions. Each has four options.
 

Required:
a. Explain which distribution model in this probability.
b. Compute the probability of just getting passing mark if passing mark is 40%.

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