Case Problem1: Bock investment Services The goal of Bock Investment Services (BJS) is to be the leading money market advisory service in South Carolina. To provide better service for their present clients and to attract new clients‚ BIS developed a weekly newsletter. BIS is considering adding a new feature to the newsletter that will report the results of a weekly telephone survey of fund managers. To investigate the feasibility of offering this service‚ and to determine what type of information
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test is that the observed data do not fit the expected frequencies for the population‚ and the null hypothesis is that they do fit the expected frequencies for the population. There is no conventional way to write these hypotheses in symbols like statistical tests. To illustrate the x2 goodness-of-fit test‚ let’s look at a situation in which its use would be appropriate. Suppose that a researcher is interested in determining whether the teenage pregnancy rate at a particular high school is different
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6.2.5 Statistical analysis The values are expressed as mean ± SEM. The statistical analysis was carried out by one-way analysis of variance using SPSS (version 17) statistical analysis program. Duncan’s post hoc multiple comparison tests were used to determine significant differences among groups. P < 0.05 was considered to be significant. 6.3 Results 6.3.1 Liver function tests Liver toxicity markers were assayed to assess hepatic injury. The activities of alkaline phosphatase (ALP)‚ acid phosphatase
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Do males have better spatial awareness than females? Spatial Awareness: the ability to be aware and conscious of ourselves and objects in our environment‚ and their movement in space in relation to each other. Experimental hypothesis: males will correctly identify more shape pairs than females in a mental shape rotation task measuring spatial awareness. Null hypothesis: there will be no difference in the number of right answers achieved by males and females in the mental shape rotation task
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ad the Ethical Behavior at Bayview case study and using this data set please provide a Managerial Report that includes the following: 1. Use descriptive statistics (compute the proportion of all students‚ male students‚ and female students that presented work copied off the internet as their own‚ copied answers off another student’s exam‚ or collaborated with other students on projects that were supposed to be completed individually) to summarize the data and comment on your findings. 2.
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Statistical process control (SPC) is the application of statistical methods to the monitoring and control of a process to ensure that it operates at its full potential to produce conforming product. Under SPC‚ a process behaves predictably to produce as much conforming product as possible with the least possible waste. While SPC has been applied most frequently to controlling manufacturing lines‚ it applies equally well to any process with a measurable output. Key tools in SPC are control charts
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Statistical Process Control Statistical Monitoring of Processes to Detect Special Causes of Variation Lecture Outline • • • • • • • Basics of Statistical Process Control Control Charts Control Charts for Attributes Control Charts for Variables Control Chart Patterns SPC with Excel Process Capability Statistical QA Approaches Statistical process control (SPC) • Monitors production process to prevent poor quality Acceptance sampling • Inspects random sample of product
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1. (12 points) In this recession‚ yours truly would like to make extra money to support his frequent filet-mignon-et-double-lobster-tail dinner habit. A promising enterprise is to mass-produce garnet wedding rings for brides. Based on my diligent research‚ I have found out that women’s ring size normally distributed with a mean of 6.0‚ and a standard deviation of 1.0. I am going to order 5000 garnet wedding rings from my reliable Siberian source. They will manufacture ring size from 4.0‚ 4
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B6014 MANAGERIAL STATISTICS Course Description: This course introduces students to basic concepts in probability and statistics of relevance to managerial decision making. Topics include basic data analysis‚ random variables and probability distributions‚ sampling distributions‚ interval estimation‚ hypothesis testing and regression. Numerous examples are chosen from quality-control applications‚ finance‚ marketing and management. Type and Length of Exam: Open book‚ 3 hours‚ calculator such as HP-12C
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AJ Davis Department Stores - Project Part A‚ B‚ and C Stacie Borowicz June 14‚ 2013 Math 533 Project Part A – Exploratory Data Analysis Credit Balance ($) Based on a sample of 50 customers‚ the credit balance for customers of Davis Department stores is on average $3970.00. Based on the graph‚ 18 of the 50 sampled fall below and 17 fell above the average. The standard deviation for credit balance is 931.9. Income Annual Income of Davis Department Stores customers range anywhere
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