Meticulous Drill & Reamer (MD&R) specializes in drilling and boring precise holes in hard metals (e.g., steel alloys, tungsten carbide, and titanium). The company recently contracted to drill holes with 3-centimeter diameters in large carbon-steel alloy disks, and it will have to purchase a special drill to complete this job. MD&R has eliminated all but … Read more
Manipulating the Microsoft Excel Output Use the graphs and tables from W2 Midweek Assignment (be sure to first make the corrections needed based on your feedback from Week 2). Create a brief Microsoft PowerPoint presentation describing your sample. Be sure to give an accurate and complete description, taking your instructor’s feedback from W2 Assignment into consideration.
Fill in the blank. No explanation. Send online calculator link The comparisons of Scholastic Aptitude Test (SAT) scores based on the highest level of education attained by the test taker’s parents are provided. A research hypothesis was that students whose parents had attained a higher level of education would on average score higher on … Read more
Quality Associates, Inc., a consulting firm, advises its clients about sampling and statistical procedures that can be used to control their manufacturing processes. In one particular application, a client gave Quality Associates a sample of 800 observations taken during a time in which that client’s process was operating satisfactorily. The sample standard deviation for … Read more
Use the appropriate descriptive statistics from W2 Project or run new descriptive statistics for Recall1 using Microsoft Excel. Assuming that the sample statistics you computed are exactly equivalent to the corresponding population parameters, and using the formula X = (±z)(sd) + M (see below) identify the following: The exact score on Recall1 that would fall … Read more
Explain the general rationale behind using a z-score for describing how an individual performed on an e x a m compared to just stating the overall mean and the individual’s score. How does the information differ in the two situations? What additional information are you gaining with a z-score? Imagine you are in charge of … Read more
Final Project For this assignment, use data from W1 Project. Using Microsoft Excel and following the instructions given in your lecture, choose and run the appropriate descriptive statistics to describe the characteristics of the sample under study (sex, age, and ethnicity) and Recall1, making sure you include: A graph The appropriate measure of central tendency … Read more
Suppose 36 participants complete an experiment where ads are presented subliminally during a task (e.g. Coke ads are flashed at very fast rates during movie ads). Participants are then given a recognition test of images of the ads, where two images are presented and participants must choose which of the two was presented earlier. Both … Read more
In this project, you will demonstrate your mastery of the following competencies: Implement statistical analysis using quantitative and qualitative variables Apply statistical techniques to address research problems Scenario You are a data analyst working for a real estate company based in Seattle. You have access to a large set of historical data that you can … Read more
Respond to the following: On the basis of what you learned in the readings, define the terms “sample” and “population” and describe some of the advantages and disadvantages of using a sample compared to a population. Support your reasoning with examples. A researcher is studying the effects of caffeine on e x a m scores … Read more