Statistics Homework Help

Statistics Homework Help. Use the following data to conduct a Chi-square test for each region of the company in the same manner you viewed in the video: RegionExpected Actual Southeast Defined 100 98 Open 100 104 Northea

Use the following data to conduct a Chi-square test for each region of the company in the same manner you viewed in the video:

RegionExpected

Actual

Southeast

Defined

100

98

Open

100

104

Northeast

Defined

150

188

Open

150

214

Midwest

Defined

125

120

Open

125

108

Pacific

Defined

200

205

Open

200

278

Step 3:

Write an 800–1,000-word essay, utilizing APA formatting, to discuss the following:

  • Describe why hypothesis testing is important to businesses.
  • Report your findings from each Chi-square test that you conducted.
  • Based solely on the Chi-square test, discuss whether the company should accept the null hypothesis in each region or reject it in favor of the alternate hypothesis.
  • Discuss any other statistical analyses you would want the company to contemplate before deciding if it will go with a defined or open sales strategy.
  • Describe and discuss at least 1 other business scenario in which you believe Chi-square testing would be help these 

Statistics Homework Help

Statistics Homework Help

Statistics Homework Help. Hi I have a homework question that I just don’t think I have the formula right. Question:

Question:

The logistic equation is commonly used to model growth phenomena in biological populations: Y = (L/(1+e^-a(x-b)), where Y is the response, x is the input, L, a, and b are constants. Assume that L is given as L0, find the least squares estimations of a and b.

If L0 it can be treated as a constant. So we are looking for P(a) and P(b). I was trying to write the bottom part taking the reciprocal of the negative exponential making it Y= L(1+e^a(x-b)). Then multiplying everything by the log, making Y = ln(L) (1+(ln(a))(ln(x-b)). But i don’t know if this is the right step or even what formula to apply to get Probability of a or b.

Statistics Homework Help

Statistics Homework Help

Statistics Homework Help. Review the Walden Institutional Review (IRB) process and requirements described in the Walden Center for Research

Review the Walden Institutional Review (IRB) process and requirements described in the Walden Center for Research

Quality. Consider how these IRB processes and requirements for ethical practice might apply to your Final Project, which is a proposal for an intervention that addresses a health problem identified in a particular community and that is of interest to you.

LINK  TO REVIEW ON IRB:

 Walden Institutional Review. (n.d.). Research ethics & compliance: Welcome from the IRB. Retrieved December 31, 2014, from http://academicguides.waldenu.edu/researchcenter/orec

The question and details are attached and also pasted in the body.

        3- to 4-page paper in which you do the following:

  My Final Project Topic is: Drug Abuse Among African American Youth In  The  United  States.

QUESTION TO ANSWER: PLEASE MUST BE IN YOUR OWN WORDS

Explain ethical issues related to your Final Project research program intervention.

Explain whether these issues are actual or potential and provide a rationale for your answer.

Explain the level of privacy that would be required according to an IRB for participants in your Final Project research program intervention, and explain why.

Running head: DRUG ABUSE AMONG AFRICAN AMERICAN YOUTH IN THE UNITED STATES 1 Drug Abuse among African American Youth in the United States(Student name)(Course Name)January 5, 2017 DRUG ABUSE…

Statistics Homework Help

Statistics Homework Help

Statistics Homework Help. assess the questions using both Excel and SPSS software. Results from these programs should be copied and pasted

assess the questions using both Excel and SPSS software. Results from these programs should be copied and pasted

with statements amd data and input information benefits.

A manager of a food manufacturing company wants to estimate the percentage of fat in one of its salad dressings. A sample of 20 bottles was taken and the results are given below.

15.88       19.88       21.16       20.37       22.77       20.65

18.60       18.91       21.77       21.64       18.62       18.41

20.15       17.07       19.91       21.07       16.49       21.21

17.98       20.22

a. Use Excel to calculate the mean, median, and standard deviation for these data.

b. Use SPSS to calculate the mean, median, and standard deviation for these data.

c. Use SPSS to develop a histogram of these data.

d. Interpret these results and explain whether or not it is honest for the manufacturer to state that the fat content is 20%? Explain your answer.

Statistics Homework Help

Statistics Homework Help

Who is available for this assignment? I have the the research paper I complete… I will attach it too. You will select an approved research article of choice to create a power point present, presenti

Who is available for this assignment? I have the the research paper I complete… I will attach it too.

You will select an approved research article of choice to create a power point present, presenting via canvas (with voice presentation inserted into the presentation.  Topic should be in the same area of your research topic, which you allow to select one of the articles utilized for both the bibliography and the paper.  You are to focus on presenting the statistical data from the study in a manner that is understandable and assess-able of your understanding of the concepts taught throughout the course.  Presentations are to be 10 minutes in length from start to finish.  Slides should be attractive to the audience and if videos are included, it can not be over 2 -3 minutes of the presentation. A rubric will be provided fro grading purposes.  

Statistics Homework Help

135 UB students were surveyed and asked how many hours a week they spent studying. The results are in the table below? Less than 5hrs (5 to10hrs) (More than 10) Total Male (M) 25 25

135 UB students were surveyed and asked how many hours a week they spent studying. The results are in the table below?

Less than 5hrs (5 to10hrs)  (More than 10)  Total

Male (M)    25     25                 20                   70

Fmale (F)  20      30                15                    65

Total          45      55                 35                 135

a) Complete the joint and marginal probability. 

b) Find the probability that a student studied 5 to 10 hours. 

c) Find the probability that a student is a male and spends less than 5 hours studying. 

d) Find the probability that a student is a female or spends more than 10 hours studying. 

e) Find the probability that a student spends more than 10 hours studying given that the student is a female? 

f) Find the probability that a student is a male given that he spends less than 5 hours studying. 

Statistics Homework Help

Probability plays a major role in the medical community. Diagnoses are based on probabilities. They are really questions or “what if’s”, and are answered by the probability that the treatment will be

Probability plays a major role in the medical community. Diagnoses are based on probabilities. They are really questions or “what if’s”, and are answered by the probability that the treatment will be the best for the ailment.

Let’s look at probability in terms of both the real world and the medical community.

  1. Survey 30 people to find out if they are left-handed or right-handed, and use the following chart to create a contingency table with the information.

Left handed Right handed Total Female Male Total

  1. Answer the following questions about the information in your contingency table:
    1. If a person is randomly selected from the survey participants, what is the probability that the person will be left-handed?
    2. If you randomly choose a female from the people you surveyed, what is the probability that she is left-handed?
    3. What is the odds ratio of choosing a left-handed female?
    4. What is the relative risk of choosing a left-handed female?

We are looking at odds ratios and relative risk. Think about which variable is your outcome and which is your group. For relative risk, the groups go in the denominator.

It is helpful if you look at the idea of statistical probability, subjective probability, and conditional probability in this post. These are the big three that you are probably using.

Statistics Homework Help

Module 1 Assignment 1. Classify each characteristic as a qualitative or quantitative: TimeType of carTown of birthExamination gradeDaily rainfall 2. This table summarizes the number of game console

Module 1 Assignment

1. Classify each characteristic as a qualitative or quantitative:

  1.  
    1.  
      1. Time
      2. Type of car
      3. Town of birth
      4. Examination grade
      5. Daily rainfall

2. This table summarizes the number of game consoles sold in three areas as of the end of 2010. The numbers are in millions.

  1.  
    1.  
      1. Present pie charts that show the market share within each geographic region. Size the pie charts to obey the area principle so that someone can see, for example, that the European market is larger than the market in Japan.
      2. Use a clustered bar chart to present these data, keeping the bars for each type of console in group. What does this bar chart show that is not so evident in the pie charts?

3. Would you expect distributions of these variables to be uniform, unimodal, or bimodal? Symmetric or

skewed? Explain why.

(a) The number of songs that each student in your class has downloaded online

(b) Cost of each order from a mail-order catalogue for clothing

(c) Weights of bags of M&Ms that are labelled to contain 6 ounces

(d) Heights of students in your class

(e) Ages of shoppers in a convenience store near a university late Saturday night

(f) Number of children of shoppers in a toy store

(g) Amount of cash taken in by retail cashiers during a two-hour shift

(h) Number of packages processed each day by Federal Express in their hub location in Memphis, Tennessee, during August and the four weeks before Christmas

4. Some investors use the Sharpe ratio as a way of comparing the benefits of owning shares of stock in a company to the risks. The Sharpe ratio of a stock is defined as the ratio of the difference between the mean return on the stock and the mean return on government bonds (called the risk-free rate rf ) to the SD of the returns on the stock.

The mean return on government bonds is rf = 0.03% per day.

The table below describes the daily return of three stocks.

Date

APPLE

TESLA

GM

01/10/2020

0.85%

4.46%

2.67%

02/10/2020

-3.23%

-7.38%

0.26%

05/10/2020

3.08%

2.55%

1.64%

06/10/2020

-2.87%

-2.75%

-1.81%

07/10/2020

1.70%

2.73%

4.01%

08/10/2020

-0.10%

0.15%

1.87%

09/10/2020

1.74%

1.90%

-0.16%

12/10/2020

6.35%

1.91%

0.16%

13/10/2020

-2.65%

0.98%

-1.06%

14/10/2020

0.07%

3.28%

-0.63%

15/10/2020

-0.40%

-2.69%

2.90%

16/10/2020

-1.40%

-2.05%

2.64%

19/10/2020

-2.55%

-2.01%

-0.30%

20/10/2020

1.32%

-2.06%

6.75%

21/10/2020

-0.54%

0.17%

0.48%

22/10/2020

-0.96%

0.75%

4.58%

23/10/2020

-0.61%

-1.21%

-1.55%

26/10/2020

0.01%

-0.08%

-2.74%

27/10/2020

1.35%

1.05%

-2.60%

28/10/2020

-4.63%

-4.39%

-2.29%

29/10/2020

3.71%

1.18%

2.35%

30/10/2020

-5.60%

-5.55%

-1.03%

02/11/2020

-0.08%

3.21%

0.06%

03/11/2020

1.54%

5.84%

2.32%

04/11/2020

4.08%

-0.69%

-0.31%

05/11/2020

3.55%

4.06%

5.39%

06/11/2020

-0.29%

-1.86%

0.89%

09/11/2020

-2.00%

-2.02%

3.98%

10/11/2020

-0.30%

-2.59%

5.44%

11/11/2020

3.04%

1.65%

-1.27%

12/11/2020

-0.23%

-1.29%

-3.06%

(a) Find the Sharpe ratio of stock in these three companies. Which looks best from this investment point of view?

(b) How does the Sharpe ratio differ from the type of standardizing used to form z-scores?

Statistics Homework Help

This is for my homework for statistics and probability. thank you in advance.

(20 points) It has been suggusted that the highest priority of retirees is travel. Thus, a study was conducted to investigate the differences in the length ofstay of a trip for pre- and post-retirees. A sample of 703 travelers were asked how long they stayed on a typical trip. The observed results of the study arefound below. Number of Nights Pre-retirement Post-retirement Total4 — 7 236 1758 — 13 83 7114 — 21 32 5722 or more 16 33Total 367 336 With this information, construct a table of expected numbers. Number of Nights Pre-retirement Post—retirement 4—78—1314—21 22 or more

Statistics Homework Help

Migratory Logistics (ML) is a new, one-day delivery service between many points in the U.S. ML is concerned about having packages delivered on time. From its records, it determines that the time from

Migratory Logistics (ML)  is a new, one-day delivery service between many points in the U.S. ML is concerned about having packages delivered on time. From its records, it determines that the time from package pick-up to delivery is normally distributed with a mean of 16.24 hours and a standard deviation of 2 hours.

What is the probability that a randomly selected package will be delivered in more than 17 hours?

Report your answer as a probability (NOT a percent) and report the value to 4 decimal places.