Tag: Mathematics

In everyday terms, a confidence interval is the range of values around a sample statistic (such as mean or proportion) within which clinicians can expect to get the same results if they repeat the study protocol or intervention, including measuring the same outcomes the same ways. As you ask yourself, “Will I get the same results if I use this research?”, you must address the precision of study findings, which is determined by the Confidence Interval. If the CI around the sample statistic is narrow, you can be confident you will get close to the same results if you implement the same research in your practice.

Consider the following example. Suppose that you did a systematic review of studies on the effect of tai chi exercise on sleep quality, and you found that tai chi affected sleep quality in older people. If, according to your study, you found the lower boundary of the CI to be .49, the study statistic to be 0.87, and the upper boundary to be 1.25, this would mean that each end limit is 0.38 from the sample statistic, which is a relatively narrow CI.

(UB + LB)/2 = Statistic [(1.25 + .49)/2 = .87]

Keep in mind that a mean difference of 0 indicates there is no difference; this CI does not contain 0. Therefore, the sample statistic is statistically significant and unlikely to occur by chance.

Because this was a systematic review, and tai chi exercise has been established from the studies you assessed as helping people sleep, based on the sample statistics and the CI, clinicians could now use your study and confidently include tai chi exercises among possible recommendations for patients who have difficulty sleeping.

Now you can apply your knowledge of CIs to create your own studies and make wise decisions about whether to base your patient care on a particular research finding.Thinking of the many variables tracked by hospitals and doctors’ offices, confidence intervals could be created for population parameters (such as means or proportions) that were calculated from many of them. Choose a topic of study that is tracked (or that you would like to see tracked) from your place of work. Discuss the variable and parameter (mean or proportion) you chose, and explain why you would use these to create an interval that captures the true value of the parameter of patients with 95% confidence.

Consider the following:

How would changing the confidence interval to 90% or 99% affect the study? Which of these values (90%, 95%, or 99%) would best suit the confidence level according to the type of study chosen? How might the study findings be presented to those in charge in an attempt to affect change at the workplace?

Instructions: Please answer all 61 Practice Exam questions through Excel. Show your work for each calculation question so I can see the formulas.

Questions 1-5 will use ( Datafile-8 ) I provided down below.

Questions 6-9 will use ( Salaries-8 ) I provided down below as well.

Describe the steps to graphing a linear equation. Be sure to provide an example to illustrate your description.

Describe the steps to graphing a quadratic equation. Be sure to provide an example to illustrate your description.

Describe how to solve a linear equation. Be sure to provide an example to illustrate your description. 

Describe how to solve a quadratic equation. Be sure to provide an example to illustrate your description. 

Compare and contrast slope and average rate of change.

Identify the characteristics of the graph of a quadratic equation.

Give a real life application of a quadratic function.

I’m stuck on a Differential Equations question and need an explanation.

Solve these for me please and show the explanations. Thank you so much.

1- Use the method of undetermined coefficients to find one solution of: y”- y’- y = 2e^(2t)

y(t) = ?

2- Find the solution of y”+7y’ = 392 sin(7t) + 392 cos(7t)

with y(0) = 2 and y'(0) = 9

y = ?

Hi,

I need step by step solutions for all the 10 questions in the attached pdf file.

You will be submitting 2 files: the Excel data file with all of your calculations and
graphs and a separate Microsoft Word document that answers each question in words.

The assigned developing country is Cote D’Ivoire.

Can you help me with these 3 questions? I need to turn it in by 5 pm est. I still have 12 hours to finish. I finished most of the questions. There is only 3 questions left. I will attach pdf lectures and these 3 questions below. Thanks in advance.

There are initial-value problems and step functions and delayed functions. Only do section 5.4: 4,5,7,13,15,17 and section 5.5: 2,6,9,14,16,19,20. Please answers with steps.

please use JMP to finish it!! The data should be in the JMP, but I copy it to a excel document.

Caffeine is the world’s most widely used stimulant, with approximately 80% consumed in the form of coffee. Suppose a study was conducted to investigate the relationship between coffee consumption and exercise. Participants were randomly recruited from the undergraduate and graduate student populations of universities in the Boston/Cambridge area. Participants were asked to report the number of hours they spent per week on moderate (e.g., brisk walking) and vigorous (e.g., strenuous sports and jogging) exercise. Based on these data, the researchers estimated the total hours of metabolic equivalent tasks (MET) per week, a value always greater than 0. The file contains simulated MET data for the study participants, based on the amount of coffee consumed. The consumption groups are labeled A – E.

– A: 1 cup or less of caffeinated coffee consumed per week
– B: 2 to 6 cups of caffeinated coffee consumed per week
– C: 1 cup of caffeinated coffee consumed per day
– D: 2 to 3 cups of caffeinated coffee consumed per day
– E: 4 or more cups of caffeinated coffee consumed per day

1. Create a plot that shows the association between MET score and coffee consumption. Describe what you see.
2. Conduct an analysis to determine whether the average physical activity level varies among the different levels of coffee consumption.
3. Assess whether the assumptions for the analysis method are reasonably satisfied.
4. Summarize the conclusions and comment on the generalizability of the study results.

For this milestone, you will submit a draft of your Application of
Sociological Theories and Concepts, addressing critical element II of
capstone component 1 (white paper) in the Final Project Guidelines and
Rubric document.
You will use the workplace scenario selected in Milestone One and
address the following:
Use a sociological perspective to explain the presence of the problem in
the scenario you selected and some of the major organizational factors
that could have contributed to the problem—this should be done at both
the micro and macro level.
Use at least one specific sociological theory and several related
concepts to provide a more in-depth discussion of your sociological view
of why the problem occurred.
Explain how (1) and (2) involve different social structures and the
social construction of reality of the different stakeholders. Also,
explain how different cultural perspectives could have been involved.
This milestone and all other milestones related to the white paper
should be specifically written for the CEO and board of directors of the
company in your scenario (the company may be fictitious), as that is
the audience for your white paper.