Sampling and research design1. In research studies, collecting the proper sample is prominent. How is the sample different from the population? In this regard, what is the difference between parameter and statistic? Also, one problem with using a sample is that the sample cannot perfectly represent the population. This discrepancy is called sampling error. Define the term, sampling error, and describe why it occurs in sample statistic. Lastl...
RationaleOrganisations are being compelled to collect, organise, store and disseminate data in large volumes to support decision making in order to improve business operations and achieve competitive advantage. Data management and analytics technologies have become widely accessible and affordable to businesses which are increasingly adopting these technologies to create useful insights from big data. Businesses now require managers, account...
Dataset DescriptionThis ECA requires you to analyze a clothing E-Commerce dataset that includes customer reviews. The data is available from the Kaggle website: https://www.kaggle.com/nicapotato/womens-ecommerce-clothing-reviews The dataset has been anonymized and the references to the company in the review text and title were replaced with a generic term “retailer”. You are required to download the dataset (Womens Clothing E-Com...
Task Overview: Journal activities in this course are private between you and your instructor. Journal activities are designed to help you make meaningful connections between the course content and the larger goals of this course. While a certain level of informality is permitted, proper grammar, spelling, and APA citations are required. Your journal post should reflect academic rigor. Journals in this course are graded individually. For the ...
InstructionsInstructions:You have to submit the Stata do file as well as the final report. The do file should be self-sufficient in terms of explaining which lines display the outputs for a particular question. These can be added in the following format in the do file. Your tables need to be incorporated using images, directly obtained through Stata. Each image (table) should show the Stata command and its output. These tables are not inclu...
ObjectivesCountry Berazia has experienced both shortages and surpluses of gasoline and other petroleum products. It is becoming apparent that the periods of shortages will increase as the world exhausts its supply of crude oil. In an effort to postpone that event, the government has been trying to persuade consumers to reduce their consumption of energy. The government of Berazia has launched advertising campaigns for this pu...
Task: A penalty of five marks will be deducted for late submissions that are made within the first hour after the deadline. Submissions that are more than one hour late but within the first 24 hours of the deadline will incur a penalty of ten marks. After the first 24 hours have passed, ten marks will be deducted for every 24 hours (or part thereof) that the submission is late for a total of 5 days. After 5 days it is treated as a non-submissi...
General InstructionsFor this assignment you will write a brief research report in APA style. Your research reportwill describe a study investigating behavioural priming. The study is based on data we collected via the online experiment posted earlier in the semester. The study is a fairly close replication of experiment 4 in an article by Dijksterhuis and Van Knippenberg (1998).The study aims to determine whether people who are exposed to the ...
Questions:Use the information below for questions 44. - 48. You are interested in whether there are seasonal differences in the frequency of suicide-related phone calls to a 'hot-line' center. Your tally of calls for the past year is: Table 3 Frequency of Phone Calls Per Season Fall Winter Spring Summer Observed Frequency 27 58 71 44 The null hypothesis is that there are no seasonal differences. Test the 2-tailed alternative hypothesis tha...
Step 1: Set Up Null and Alternative HypothesesThe below scenario describes a realworld or business application that utilizes statistical analysis to help resolve a business problem: increasing efficiency by decreasing processing time. Prepare an analysis by completing five steps of the hypothesis testing with one sample. The report should be a minimum of 5 pages in length. Last week, your manager asked you to analyze staffing needs for...
TaskYou are a Business Analyst working for the ABC Ball Bearing company. An hour ago, you sent an order of 74 boxes of your A1 ball bearings to a customer on your delivery truck. You have just found out that your truck is going to go over a bridge that has a weight limit of 11,500 lbs. You need to determine if your truck will safely make it over the bridge. If you determine that the truck cannot make it over the bridge, you will need...
Data AnalysisTwo weeks after you have taken on a job as an analyst for the City of Miami, the Mayor’s office comes to you with the following problem. There has been a discussion about whether the city should support the crime prevention program “Learning from LA,” targeting assaults and theft crimes. The program would involve the exchange of officers, joint planning sessions and CompStat-like data-driven review meetings, a...
Problem 1 1. (A) The number of laptops sold daily at a local electronics shop has the following probability distribution. (10 marks) X: # of laptops sold 12 13 14 15 P(X=x) 0.4 0.3 0.2 0.1 What is the mean of the number of laptops sold on agiven day? What is the variance of the number of laptops sold on agiven day? (B) Internet service providers (ISP) need to resolve ...
Examine the variables in your dataset1. Examine the variables in your dataset to ensure that you understand what each variable is measuring. 2. Which variables are categorical or quantitative? Discrete or continuous? 3. How do you interpret the units of measurement? 4. Brainstorm potential relationships that you might expect to see between the variables in your dataset. 5. Which relationships might be important or useful to discover?...
Data SourcesThis assignment is prepared to check your understanding of economic growth and disparities between countries’ levels of development based on empirical evidence. You are expected to extract the data for this purpose of analysis from relevant credible sources. Originality and clarity in your work are highly valued. Long-run Economic Growth Extract the data for GDP per capita of all sovereign countries for selected years of 19...