Midterm Exam for Stat 200 Accounting
Assignment ID Number AFFGEHU83939HD Type of Document Essay Writing Format APA/MLA/Harvard Academic Level Masters/University References/Sources 4 References
Midterm Exam for Stat 200 Accounting
The quiz is worth a total of 100 points. Your Exam score, along with comments, will be displayed in your assignment folder.
This exam includes open book and open notes, and you may take as much time as you want on it as long as you submit the quiz by the due date listed in our syllabus’s course schedule. You are allowed to consult your textbook, notes, and online classroom materials, but not anybody else.
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You must include the following dated statement with your name entered in place of a signature at the end of your quiz. You’ll get a zero if you don’t sign this statement.
I completed this quiz entirely on my own, with no assistance from anyone other than the instructor. On this question, neither I nor anyone else has offered or received assistance.
James Shanique V.’s full name is James Shanique V. Date: 19 June 2021
1. The ages of a group of tourists visiting the Library of Congress are as follows:
36, 38, 33, 44, 37, 37, 38, 34, 34, 36, 34, 40, 42, 41, 35, 48, 31, 33, 46, 47, 33, 36, 37, 37, 34, 39, 35, 37, 36, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39,
a) Create a histogram of the ages with a 5-year class width.
b) Calculate the dataset’s mean.
b) Determine the dataset’s median.
2. True or false based on the following dataset: 13, 13, 15, 15, 16, 16, 16, 17, 18, 22.
a) The dataset above has a maximum value of 22. If the analyst makes a mistake and records it as 2.2, the mean and median of the dataset will be affected. Calculations should be displayed.
b) If a dataset’s variance is 0, then all observations must be zero as well.
c) The dataset’s standard deviation cannot be negative.
d) A dataset’s variance is always positive.
e) The graphs below show a negative correlation:
3. Three of thirteen smartphones in a shipment have damaged screens. What is the chance that the first 10 sold have an undamaged screen if they are sold in a random order?
4. There are a variety of outcomes that can occur when you toss a fair six-faced die twice:
a) Determine the sample space’s number of possible outcomes. Give an explanation for your response.
b) Determine the chances of getting a number larger than 5 on the first toss. Demonstrate your work and express your solution in the simplest fraction form possible.
c) Determine the likelihood that the total of the two throws is at least 7. Demonstrate your work and express your solution in the simplest fraction form possible.
d) Given that you acquire a number greater than 2 in the first toss, calculate the chance that the sum of the two tosses is at least 7. Demonstrate your work and express your solution in the simplest fraction form possible.
e) If event A is “getting a number bigger than four in the first throw” and event B is “the sum of two tosses is at least eight,” then Are events A and B self-contained? Justify your response.
5. SAT Math scores are regularly distributed with a population standard deviation of 200 for all seniors in a high school. Determine: If 100 seniors from the school are chosen at random and their SAT Math scores have a sample mean of 650,
1. What distribution will you use to calculate the crucial value for a confidence interval estimate of the mean SAT Math score for High School seniors? Why?
2. Create a 95 percent confidence interval estimate of the mean Math score for High School seniors. Demonstrate your effort and round your answer to the nearest two decimal places.
6. You have eight blue and eight green clothes in your closet. On Monday, you choose a shirt at random, and on Tuesday, you choose a different shirt. On Monday, you wear a blue shirt and on Tuesday, you wear a green shirt. Determine if the scenario contains an independent or dependent event. Calculate the probability.
7. You’re changing the four-digit lock’s combination. You only care about the number 1234, not the order in which it appears. Determine the number of options.
Is a 90% confidence interval estimate of the mean SAT Math score wider than the 95% confidence interval estimate you derived from part 2 of Problem 5)? Why? It is important to note that the 90 percent confidence interval does not have to be constructed.
9. Assume that the population is distributed regularly. The following hypothesis test is performed using a sample size of 225, a sample mean of 750, and a standard deviation of 30.
H0: = 745 H0: = 745 H0: = 745 H0: = 7
(a) Is this a proportional, mean, or standard deviation test? For the critical value, what distribution should you use?
(b) What is the significance of the test statistic? (Exhibit your work and round to three decimal places.)
(c) What is the significance of the p-value? (Show your work and round your answer to the nearest two decimal places.) You must specify the processes if you employ technology to calculate the P-value).
A chemical test was given to 500 students. You took a random sample of 100 students to calculate the average and standard deviation. In calculating the standard deviation, how many degrees of freedom were there? (Explain why you deserve full credit.)
(a) 500; (b) 499; (c) 100; (d) 99; (e) 100; (f) 99; (g) 99; (h) 99;
Excel spreadsheet with online applet on hackmath.net (NORMINV)
QUALITY OF RESPONSE NO RESPONSE POOR / UNSATISFACTORY SATISFACTORY GOOD EXCELLENT Content (worth a maximum of 50% of the total points) Zero points: Student failed to submit the final paper. 20 points out of 50: The essay illustrates poor understanding of the relevant material by failing to address or incorrectly addressing the relevant content; failing to identify or inaccurately explaining/defining key concepts/ideas; ignoring or incorrectly explaining key points/claims and the reasoning behind them; and/or incorrectly or inappropriately using terminology; and elements of the response are lacking. 30 points out of 50: The essay illustrates a rudimentary understanding of the relevant material by mentioning but not full explaining the relevant content; identifying some of the key concepts/ideas though failing to fully or accurately explain many of them; using terminology, though sometimes inaccurately or inappropriately; and/or incorporating some key claims/points but failing to explain the reasoning behind them or doing so inaccurately. Elements of the required response may also be lacking. 40 points out of 50: The essay illustrates solid understanding of the relevant material by correctly addressing most of the relevant content; identifying and explaining most of the key concepts/ideas; using correct terminology; explaining the reasoning behind most of the key points/claims; and/or where necessary or useful, substantiating some points with accurate examples. The answer is complete. 50 points: The essay illustrates exemplary understanding of the relevant material by thoroughly and correctly addressing the relevant content; identifying and explaining all of the key concepts/ideas; using correct terminology explaining the reasoning behind key points/claims and substantiating, as necessary/useful, points with several accurate and illuminating examples. No aspects of the required answer are missing. Use of Sources (worth a maximum of 20% of the total points). Zero points: Student failed to include citations and/or references. Or the student failed to submit a final paper. 5 out 20 points: Sources are seldom cited to support statements and/or format of citations are not recognizable as APA 6th Edition format. There are major errors in the formation of the references and citations. And/or there is a major reliance on highly questionable. The Student fails to provide an adequate synthesis of research collected for the paper. 10 out 20 points: References to scholarly sources are occasionally given; many statements seem unsubstantiated. Frequent errors in APA 6th Edition format, leaving the reader confused about the source of the information. There are significant errors of the formation in the references and citations. And/or there is a significant use of highly questionable sources. 15 out 20 points: Credible Scholarly sources are used effectively support claims and are, for the most part, clear and fairly represented. APA 6th Edition is used with only a few minor errors. There are minor errors in reference and/or citations. And/or there is some use of questionable sources. 20 points: Credible scholarly sources are used to give compelling evidence to support claims and are clearly and fairly represented. APA 6th Edition format is used accurately and consistently. The student uses above the maximum required references in the development of the assignment. Grammar (worth maximum of 20% of total points) Zero points: Student failed to submit the final paper. 5 points out of 20: The paper does not communicate ideas/points clearly due to inappropriate use of terminology and vague language; thoughts and sentences are disjointed or incomprehensible; organization lacking; and/or numerous grammatical, spelling/punctuation errors 10 points out 20: The paper is often unclear and difficult to follow due to some inappropriate terminology and/or vague language; ideas may be fragmented, wandering and/or repetitive; poor organization; and/or some grammatical, spelling, punctuation errors 15 points out of 20: The paper is mostly clear as a result of appropriate use of terminology and minimal vagueness; no tangents and no repetition; fairly good organization; almost perfect grammar, spelling, punctuation, and word usage. 20 points: The paper is clear, concise, and a pleasure to read as a result of appropriate and precise use of terminology; total coherence of thoughts and presentation and logical organization; and the essay is error free. Structure of the Paper (worth 10% of total points) Zero points: Student failed to submit the final paper. 3 points out of 10: Student needs to develop better formatting skills. The paper omits significant structural elements required for and APA 6th edition paper. Formatting of the paper has major flaws. The paper does not conform to APA 6th edition requirements whatsoever. 5 points out of 10: Appearance of final paper demonstrates the student’s limited ability to format the paper. There are significant errors in formatting and/or the total omission of major components of an APA 6th edition paper. They can include the omission of the cover page, abstract, and page numbers. Additionally the page has major formatting issues with spacing or paragraph formation. Font size might not conform to size requirements. The student also significantly writes too large or too short of and paper 7 points out of 10: Research paper presents an above-average use of formatting skills. The paper has slight errors within the paper. This can include small errors or omissions with the cover page, abstract, page number, and headers. There could be also slight formatting issues with the document spacing or the font Additionally the paper might slightly exceed or undershoot the specific number of required written pages for the assignment. 10 points: Student provides a high-caliber, formatted paper. This includes an APA 6th edition cover page, abstract, page number, headers and is double spaced in 12’ Times Roman Font. Additionally, the paper conforms to the specific number of required written pages and neither goes over or under the specified length of the paper.
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