Category: Statistics

A manufacturing company regularly conducts quality control checks at specified periods on the products it manufactures. Historically, the failure rate for LED light bulbs that the company manufactures is 5%. Suppose a random sample of 10 LED light bulbs is selected. What is the probability that
a. none of the LED light bulbs are defective?
b. exactly one of the LED light bulbs is defective?
c. two or fewer of the LED light bulbs are defective?
d. three or more of the LED light bulbs are defective?
Q2) Assume that the number of new visitors to a website in one minute is distributed as a Poisson variable. The mean number of new visitors to the website is 4.0 per minute. What is the probability that in any given minute
a. zero new visitors will arrive at the website?
b. exactly one new visitor will arrive at the website?
c. two or more new visitors will arrive at the website?
d. fewer than three new visitors will arrive at the website?

LEVELS OF DATA/MEASUREMENT
…please tell me what “LEVELS OF DATA/MEASUREMENT” is EACH VARIABLE ON THE ATTACHED SURVEY.
— Write the “level” NEXT to the variable – save, then UPLOAD IT
. — I AM NOT ASKING YOU TO FILL IT OUT!!
—
Instructions
a. UPLOAD the SURVEY – indicating the LEVELS OF DATA/MEASUREMENT of each variable
Survey
INTERVIEW PACKAGE: Recruiting Letter and Scales

ALL CORRECTIONS/EDITS ARE APPRECIATED

​

RECRUITING STATEMENT

Social Statistics
Profile of Dillard University Students Evaluative Survey/Questionnaire

Dr. Steve A. Buddington and his students in the spring 2019 Social Statistics Class ask that you respond to this survey. This is a PILOT STUDY – assessing the profile of a purposive sample of students on the variables delineated – will only be used internally and will not be published.

Please complete the following questionnaires or surveys; if you are a Dillard University student. This survey is confidential. Your answers will be summarized with the various others who completed the survey/questionnaire and USED ONLY FOR TEACHING AND LEARNING OF DATA ANALYSIS Do not write any identifying information on this survey – anonymity and confidentiality are maintained.

***********************************************
Please read the following important information before you answer the surveys.

1. Answer the questions as honestly as possible. There are no right or wrong answers.

2. Don’t spend too much time thinking about the answer. Give the first answer that comes
to mind.

2. Please fill out all questions as completely as possible. Don’t skip any questions, and please provide
answers to all questions. Make sure you answer every statement with only one solution.

4. Although some questions may seem much like others, there are no statements precisely alike.

Thank you for your cooperation!!

**************************************************
2

PROFILE OF DILLARD STUDENTS

Social Statistics Data Collection/Code Sheet; Spring 2015

** If you are NOT a Dillard University Student, please do not complete this survey
________________

Age: ____​Gender: ​Male​____
​Female​ ___

Height:_____ (in inches)​Weight:_____ (in lbs)

Grade Point Average:_____​Annual Income:__________​

Study Time ( in minutes): ___________​

Time spent with Advisor (in minutes):___________

ACT Score:____________

Marital Status: ​Single​_____
Married​_____
Separated​_____
Divorced​____

Classification:​Freshman​______
Sophomore​______
Junior​______
Senior​______

The assignment requirement all in the Assignment1 – descriiptive statistics, and if have any questions just send message to me.

Week 3 Discussion Board 2
Sampling Distributions for Means
Welcome to the Week 3 Discussion Board! This week you will completing an activity on the following worksheet and applet linked within. Make your first substantive and informative post by Thursday at 11:59 pm EST. Then, respond to at least two classmates with new questions or solutions by Sunday at 11:59 pm EST.
Tasks for Your Initial Posting:
Make a copy of Sampling Distribution for Means Download Sampling Distribution for Means.
After completing the activity copy and paste your answer from #9 in this week’s discussion post.
Post your screen shots from questions 2, 5, and 8.
Please also attach your copy of the entire activity.

A randomly selected individual, after going through an experimental treatment, has a score of 27 on a particular measure. The scores of people in general on this measure are normally distributed with a mean of 19 and a standard deviation of 4. The researcher predicts an effect, but no particular direction. Using the 5% significance level, what should you conclude?
1.Please define the research and null hypotheses
2.Determine the characteristics of the comparison distribution.
3.Determine the cutoff sample scores on the comparison distribution at which the null hypothesis should be rejected.
4.Determine your sample’s score on the comparison distribution
5.Determine whether to reject the null hypothesis. What does this mean? Please describe.
6.What is the region of rejection when hypothesis testing? What is the region(s) of rejection from the question above?
7.When you make your conclusion about the null hypothesis, can you say that your results prove the hypothesis? Explain why or why not.
8.What does it mean if the results of a study are inconclusive?

Complete the homework questions from the attachments I included.
The directions are in included in the document called statistics J1 and all the answers should be submitted within this word document. This includes copy and pasting a table as necessary per directions
Excel documents are included to generate the answer.
Included is also a definition list in case the headers are not self explanatory
4 attachment total

Complete the homework questions from the attachments I included.
The directions are in included in the document called statistics J1 and all the answers should be submitted within this word document. This includes copy and pasting a table as necessary per directions
Excel documents are included to generate the answer.
Included is also a definition list in case the headers are not self explanatory
4 attachment total

A randomly selected individual, after going through an experimental treatment, has a score of 27 on a particular measure. The scores of people in general on this measure are normally distributed with a mean of 19 and a standard deviation of 4. The researcher predicts an effect, but no particular direction. Using the 5% significance level, what should you conclude?
1.Please define the research and null hypotheses
2.Determine the characteristics of the comparison distribution.
3.Determine the cutoff sample scores on the comparison distribution at which the null hypothesis should be rejected.
4.Determine your sample’s score on the comparison distribution
5.Determine whether to reject the null hypothesis. What does this mean? Please describe.
6.What is the region of rejection when hypothesis testing? What is the region(s) of rejection from the question above?
7.When you make your conclusion about the null hypothesis, can you say that your results prove the hypothesis? Explain why or why not.
8.What does it mean if the results of a study are inconclusive?

I have completed the first task, the B task has already had an ANOVA run, and the final task requires an ANOVA (with interaction). I need Task B completed with a report and appropriate tables in APA 7 format, (TABLES MUST BE CREATED IN WORD), and Task C will require a full statistical analysis through SPSS with a report. I have attached a word file which shows a High Distinction level of report, please use this as a guide for the remainder of the workbook.
Task B: Report (33%)
After examining their results (from Task A), the researchers were interested in including an additional variable into their model: employment status. This new study consists of the following hypotheses:
‘very high and high substance users’ would have higher stress levels than ‘moderate and low substance users’.
‘moderate substance users’ would have higher levels of stress levels than ‘low substance users’, and
these differences in stress levels are affected by employment status.
Use the Assignment 3: Workbook 2 data file to carry out the appropriate analyses to address these hypotheses and write a new report of your findings (not a continuation of Task A’s report). For this task, use a table when reporting the descriiptive statistics.
In addition, consider the following notes: 
Note 1: Assume that the assumption of normality has been met.
Note 2: Based on the result of Levene’s test statistic, you must choose to present the appropriate statistics at the planned contrast stage.
Note 3: Check the marking rubric to see how this question is graded.
Note 4: See the Modules 8 and 9 content for sample reports.
Task C: Report (37%)
In a new study, the researchers are interested in investigating the differences in mental health scores for the different groups of people classified according to the overall score for education/employability (low, moderate, and high). Further, they would like to include pre-employment medical status (yes or no) as an additional variable.
This new study consists of the following hypotheses:
‘high education category’ will have lower mental health scores than the ‘moderate education category’.
‘high education category’ will have lower mental health scores than the ‘low education category’.
these differences in mental health scores will be greater in people who ‘did not pass a pre-employment medical’ compared to those ‘who did pass a pre-employment medical’.
Use the data in the Assignment 3: Workbook 2 data file to carry out the appropriate analyses to address these hypotheses and write a report of your findings. For this task, use a Figure when reporting the descriiptive statistics.
In addition, consider the following notes:
Note 1: Assume that the assumption of normality has been met. 
Note 2: Based on the result of Levene’s test statistic, you must choose to present the appropriate statistics at the planned contrast stage.
Note 3: See the answer sheet document for an example of how to structure this question.

Complete the homework questions from the attachments I included.
The directions are in included in the document called statistics J1 and all the answers should be submitted within this word document. This includes copy and pasting a table as necessary per directions
Excel documents are included to generate the answer.
Included is also a definition list in case the headers are not self explanatory
4 attachment total