External link to Response to VT

Response to VT

While the range scores is not typically considered a reliable description of variability because it fails to address the distance between scores, it is used in certain situations. For example, the interquartile range is typically used in situations where the central tendency is measured by the median; this applies to data with extreme scores, undetermine values, and nominal scales of measurement (Gravetter et al., 2021). Additionally, […]

External link to Business Statistics 510 week 9 assign

Business Statistics 510 week 9 assign

LINEAR REGRESSION ANALYSIS Linear Regression Analysis Terry Downes owns a commercial cleaning company. He has conducted a survey of customers to determine how satisfied they are with the work performed. He devised a 100-point rating scale—with 0 being poor and 100 being excellent service, selected a random sample of 14 customers, and asked them to rate the service. He also recorded the number of worker […]

External link to Response to BM 2-1

Response to BM 2-1

The three measures of central tendency include the mean, the median, and the mode. “To decide which of the three measures is best for any particular distribution, you should keep in mind that the general purpose of central tendency is to find the single most representative score” (Gravetter, Wallnau, & Witnauer, 2021, pg. 76). It is most appropriate to use the mean when scores are […]

External link to Response to KH 2-1

Response to KH 2-1

The three measures of central tendency are mean, median, and mode. Each one is calculated a little different and is appropriate in different circumstances. Mean – Commonly known as an average, the mean is calculated by adding all scores and dividing by the number of scores. This is the balancing point for a distribution and is the preferred measure of central tendency in most cases […]

External link to Response to

Response to

Hello Class, the following is an explanation of the sum of squares, variance, and standard deviation and why it is essential to understand the difference between sample statistics and population parameters. Within the field of descriptive statistics, it is important to understand and measure the amount of variability within a set of data. Variability is helpful to understand as it provides a measure of the […]

External link to math homework

math homework

The Golden Ratio is often denoted by the Greek letter phi:  _.  Its exact value is 1+5_2 which is approximately equal to 1.618. In this chapter, we saw how successive quotients of the Fibonacci Numbers get closer and closer to the Golden Ratio: 1/1=1, 2/1=2, 3/2=1.5, 5/3=1.67, 8/5=1.6, 13/8=1.625, 12/13=1.615, … Many people believe that the Golden Ratio, Golden Rectangles, and the Fibonacci Numbers “appear” in […]

External link to Regression Analysis

Regression Analysis

Please find a REGRESSION ANALYSIS for this… If a regression analysis was to be completed on body mass index (BMI), what could be an independent variable in that analysis? Why? If we could, what other independent variables should be included in the analysis? What statistic(s) would show the value of that regression in understanding BMI? Alternatively, find an article that uses regression analysis to study […]

External link to Math 510- Business Statistics: Statistical Inference Assignment

Math 510- Business Statistics: Statistical Inference Assignment

The research department of an appliance manufacturing firm has developed a solid-state switch for its blender that the research department claims will reduce appliance returns under the one-year full warranty by 3%–6%. To determine if the claim can be supported, the testing department selects a group of the blenders manufactured with the new switch and a group with the old switch and subjects them to […]

External link to Z TEST

Z TEST

Utilize the five-step process and the following data set. The two populations are: Population A: Mean=36, SD=4 Population B: (sample of one): Raw Score=44 Set up a one-tail Z test evaluating the improvement of a score, presenting the following: Restate the research question as a research hypothesis and a hypothesis about the populations. Determine the characteristics of the comparison distribution. Determine the cutoff sample score […]

External link to Week 7 Discussion

Week 7 Discussion

As we near the end of the term, it is important to acknowledge the ways you obtained support so far this term. In addition, as we discuss the different ways that you were able to work through the material, this may share ideas with others for the remainder of the term. So, for this Discussion, please share the different ways that you found support (technical, […]

External link to Module 9 Discussion Algebra

Module 9 Discussion Algebra

Students are taking advantage of online degree programs in record numbers. In 2017, six million students enrolled in at least one online course to help advance their careers, change jobs, or fulfill personal goals. It should come as no surprise that enrollment numbers are growing, as online degree programs offer many unique benefits to learners, including a high degree of flexibility. Online courses allow you to learn whenever, […]

External link to Discussion Board Reply

Discussion Board Reply

Respond to the following separate two posts with substantive replies. Minimum 100 words for both replies.  1.  For my research project I would like to perform analysis on the environmental impact of last mile drone delivery vs classical gasoline truck delivery. I hypothesize that last mile delivery performed by drone will be more environmentally friendly than using a fleet of trucks. There has been some research […]

External link to WK 4 DQ 2

WK 4 DQ 2

To Set the Criteria for the Decision (step 2 in hypothesis testing) we must identify the critical value and the rejection region. What information do you need to set the criteria? How do you determine when to use a one-tailed test? When do you use a two-tailed test?

External link to WK 3 DQ 2

WK 3 DQ 2

A population distribution is standardized to produce a new distribution. What is the standardized distribution called? What information is provided by the sign (+/-) of a z-score? What information is provided by the numerical value of the z-score?

External link to WK 3 DQ 1

WK 3 DQ 1

You and a friend are talking about the probability of getting a heads on a single toss of a fair coin. Your friend insists that you are more likely to get a heads on a single toss of a fair coin than a tails. Is your friend correct, why or why not? If we were to toss the fair coin an infinite number of times, […]

External link to Article Analysis

Article Analysis

Use the attached document, “Project 2-Articles,” and the following articles to complete this project: “Effects of Cognitive Behavioral Group Program for Mental Health Promotion of University Students,” by Lee & Lee, from International Journal of Environmental Research and Public Health (2020). “The Stigma Scale: A Canadian Perspective,” by Meier et al., from Social Work Research (2015).

External link to WK 6 DQ 2

WK 6 DQ 2

What is a post-hoc test and why it is necessary when rejecting the hypothesis with an analysis of variance (ANOVA) statistical test? Describe what a post hoc test detects. Explain an experiment in which you as a researcher would run a post hoc test. Why?

External link to WK 5 DQ 1

WK 5 DQ 1

The first problem we confront in analyzing data is determining the appropriate statistical test. Under what circumstances is a t statistic used instead of a z-score in a hypothesis test? Give an example of both a t statistic and z-score.

External link to WK 2 DQ 2

WK 2 DQ 2

Explain what is measured by each of the following: sum of squares (SS), variance, and standard deviation. Why is it essential to understand the difference between sample statistics and population parameters (e.g., when to use n-1 when calculating variance)?

External link to Respond to Dianne’s Hypothesis

Respond to Dianne’s Hypothesis

My hypothesis test is whether using a pain reliever, Pyridium (phenazopyridine), before a in office cystoscopy decreases the burning/pain sensation after the procedure.   A cystoscopy is where a telescope is inserted through the urethra into the bladder.  We do this procedure for many reasons including blood in the urine, bladder cancer surveillance and recurrent urinary tract infections.   Two types of hypotheses are the hypothesis and […]

External link to WK 3 DQ 2

WK 3 DQ 2

A population distribution is standardized to produce a new distribution. What is the standardized distribution called? What information is provided by the sign (+/-) of a z-score? What information is provided by the numerical value of the z-score?

External link to Respond to Dianne’s Hypothesis

Respond to Dianne’s Hypothesis

My hypothesis test is whether using a pain reliever, Pyridium (phenazopyridine), before a in office cystoscopy decreases the burning/pain sensation after the procedure.   A cystoscopy is where a telescope is inserted through the urethra into the bladder.  We do this procedure for many reasons including blood in the urine, bladder cancer surveillance and recurrent urinary tract infections.   Two types of hypotheses are the hypothesis and […]

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