Just a couple paragraphs, no paper

Provide two real-world survey questions that would be useful to you in a professional application or in your everyday life by doing the following two parts:

(i) Your first should be a question associated with a categorical (quantitative) variable. Describe both the population and the sample. Explain the measuring scale associated with the question. Would you collect a stratified, cluster, systematic, or convenience sample? Explain why you would choose such a sampling technique. What might you be able to infer about the data you would collect?

(ii) Your second should be a question associated with a quantitative variable. Describe both the population and the sample. Explain the measuring scale associated with the question. Also, determine whether the variable associated with the survey question is discrete or continuous. Would you collect a stratified, cluster, systematic, or convenience sample? Explain why you would choose such a sampling technique. What might you be able to infer about the data you would collect?

Be sure to support your statements with logic and argument, citing any sources referenced. Post your initial response early and check back often to continue the discussion. Be sure to respond to your peers’ and instructor’s posts, as well.

From the General Social Survey dataset found in this week’s Learning Resources, use the SPSS software and choose one continuous and one categorical variable Note: this dataset will be different from your Assignment dataset).

As you review, consider the implications for positive social change based on the results of your data.

By Day 3

Post, present, and report a descriptive analysis for your variables, specifically noting the following:

For your continuous variable:

Report the mean, median, and mode.

What might be the better measure for central tendency? (i.e., mean, median, or mode) and why?

Report the standard deviation.

How variable are the data?

How would you describe this data?

What sort of research question would this variable help answer that might inform social change?

Post the following information for your categorical variable:

A frequency distribution.

An appropriate measure of variation.

How variable are the data?

How would you describe this data?

What sort of research question would this variable help answer that might inform social change?

Be sure to support your Main Post and Response Post with reference to the week’s Learning Resources and other scholarly evidence in APA Style.

WEEK 5: CONFIDENCE INTERVAL CONCEPTS

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Look in the newspapers, magazines, and other news sources for results of a survey or poll that show the confidence interval, usually shows as a +/- some amount. Describe the survey or poll and then describe the interval shown. How does knowing the interval, rather than just the main result, impact your view of the results?

1) Consider the formula used for any confidence interval and the elements included in that formula. What happens to the confidence interval if you (a) increase the confidence level, (b) increase the sample size, or (c) increase the margin of error? Only consider one of these changes at a time. Explain your answer with words and by referencing the formula.
2) Look in the newspapers, magazines, and other news sources for results of a survey or poll that show the confidence interval, usually shows as a +/- some amount. Describe the survey or poll and then describe the interval shown. How does knowing the interval, rather than just the main result, impact your view of the results?

Identify a quality improvement opportunity in your organization or practice. In a 1,250-1,500 word paper, describe the problem or issue and propose a quality improvement initiative based on evidence-based practice. Apply “The Road to Evidence-Based Practice” process, illustrated in Chapter 4 of your textbook, to create your proposal.

Include the following:

1. Provide an overview of the problem and the setting in which the problem or issue occurs.
2. Explain why a quality improvement initiative is needed in this area and the expected outcome.
3. Discuss how the results of previous research demonstrate support for the quality improvement initiative and its projected outcomes. Include a minimum of three peer-reviewed sources published within the last 5 years, not included in the course materials or textbook, that establish evidence in support of the quality improvement proposed.
4. Discuss steps necessary to implement the quality improvement initiative. Provide evidence and rationale to support your answer.
5. Explain how the quality improvement initiative will be evaluated to determine whether there was improvement.
6. Support your explanation by identifying the variables, hypothesis test, and statistical test that you would need to prove that the quality improvement initiative succeeded.

Assignment Steps

Resources: Microsoft Excel®, The Payment Time Case Study, The Payment Time Case Data Set

Review the Payment Time Case Study and Data Set.

Develop a 700-word report including the following calculations and using the information to determine whether the new billing system has reduced the mean bill payment time:

• Assuming the standard deviation of the payment times for all payments is 4.2 days, construct a 95% confidence interval estimate to determine whether the new billing system was effective. State the interpretation of 95% confidence interval and state whether or not the billing system was effective.
• Using the 95% confidence interval, can we be 95% confident that µ ≤ 19.5 days?
• Using the 99% confidence interval, can we be 99% confident that µ ≤ 19.5 days?
• If the population mean payment time is 19.5 days, what is the probability of observing a sample mean payment time of 65 invoices less than or equal to 18.1077 days?

Submit your assignment (Excel template with text boxes or Excel template and Word document).