RES 341 WEEK 4 QUIZ 2 (A+ Guaranteed)

RES/341 WEEK 4 QUIZ 2

1. Decide if the situation presented below contains a potential for bias. If it does, tell what the form of bias is, and how it can be prevented:

2. Define, in your own words, the meaning of standard deviation.

3. What is the median height on this team?

4. The pie chart below shows the comparative restaurant sales in the town of Springfield. Give 2 reasons why this chart is a bad idea. What would be a better way of presenting the data?

5. What is the correct way to interpret this confidence interval?

Click here for the SOLUTION

Posted in Homework Help | Comments Off

RES 341 WEEK 4 QIUZ (A+ Guaranteed)

RES/341 WEEK 4 QIUZ

1. A population is:

a. An element from which the data is collected.

b. A complete set of units of analysis under study.

c. A subset of units of analysis from a sample.

d. A physical representation of sampling units.

2. A sample is:

a. A unit from which the data is collected.

b. The complete set of units of analysis under study.

c. A physical representation of sampling units.

d. A subset of units of analysis from a population.

3. The levels of measurement are:

a. Nominal, ordinal, interval, ratio.

b. Binomial, multinomial, normal.

c. T-test, z-test, chi-square, and F-test.

d. None of the above.

4. Examples of ratio measurement are:

a. Counts of physical objects.

b. Sales and costs.

c. Sales, costs, and counts of physical objects.

d. None of the above.

5. Which of the following is an example of nominal measurement?

a. Degrees on a thermometer

b. Ranking of different size apples

c. Sales dollars

d. Numbers on baseball players

6. Suppose the probability you will get a grade of A in this class is 0.25 and the probability you will get a B is 0.50. What is the probability your grade will be above C?

a. 0.125

b. 0.75

c. 0.075

d. 0.625

Click here for the SOLUTION

Posted in Homework Help | Comments Off

RES 341 WEEK 4 DQ 5 WAGES WHAT DO CONFIDENCE INTERVAL REPRESENT (A+ Guaranteed)

RES/341 WEEK 4 DQ 5 WAGES

What do confidence intervals represent?
What is the most controllable method of increasing the precision of or narrowing the confidence interval?
What percentage of times will the mean, or population proportion, not be found within the confidence interval?
When you draw a sample from a normal distribution, what can you conclude about the sample distribution? Explain.

Click here for the SOLUTION

Posted in Homework Help | Comments Off

RES 341 WEEK 4 DQ 5 WAGES (A+ Guaranteed)

RES/341 WEEK 4 DQ 5 WAGES

What do confidence intervals represent?
What is the most controllable method of increasing the precision of or narrowing the confidence interval?
What percentage of times will the mean, or population proportion, not be found within the confidence interval?
When you draw a sample from a normal distribution, what can you conclude about the sample distribution? Explain.

Click here for the SOLUTION

Posted in Homework Help | Comments Off

RES 341 WEEK 4 DQ 4 WAGES WHY DO WE WANT TO ASSUME THAT OUR SAMPLE DATA REPRESENT A POPULATION (A+ Guaranteed)

RES/341 WEEK 4 DQ 4 WAGES

Why do we want to assume that our sample data represent a population distribution?

Click here for the SOLUTION

Posted in Homework Help | Comments Off

RES 341 WEEK 4 DQ 4 WAGES (A+ Guaranteed)

RES/341 WEEK 4 DQ 4 WAGES

Why do we want to assume that our sample data represent a population distribution?

Click here for the SOLUTION

Posted in Homework Help | Comments Off

RES 341 WEEK 4 DQ 3 WAGES WHAT IS YOUR INITIAL HUNCH (A+ Guaranteed)

RES/341 WEEK 4 DQ 3 WAGES

A mayoral election race is tightly contested. In a random sample of 1,100 likely voters, 572 said they were planning to vote for the current mayor. Based on this sample, what is your initial hunch? Would you claim with 95% confidence that the mayor will win a majority of the votes? Explain.

Click here for the SOLUTION

Posted in Homework Help | Comments Off

RES 341 WEEK 4 DQ 3 WAGES (A+ Guaranteed)

RES/341 WEEK 4 DQ 3 WAGES

A mayoral election race is tightly contested. In a random sample of 1,100 likely voters, 572 said they were planning to vote for the current mayor. Based on this sample, what is your initial hunch? Would you claim with 95% confidence that the mayor will win a majority of the votes? Explain.

Click here for the SOLUTION

Posted in Homework Help | Comments Off

RES 341 WEEK 4 DQ 2 WAGES WHAT ARE SOME DIFFERENCES BETWEEN CONTINUOUS AND DISCRETE DATA (A+ Guaranteed)

RES/341 WEEK 4 DQ 2 WAGES

What are some differences between continuous and discrete data?
Can you give some examples of each from your industry?

Click here for the SOLUTION

Posted in Homework Help | Comments Off

RES 341 WEEK 4 DQ 2 WAGES (A+ Guaranteed)

RES/341 WEEK 4 DQ 2 WAGES

What are some differences between continuous and discrete data?
Can you give some examples of each from your industry?

Click here for the SOLUTION

Posted in Homework Help | Comments Off