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### Questions:

(1). Statistical criteria are sometimes used for determining what is "normal" for the population. Often, when responses are normally distributed, the normal curve is used to determine the range of normal (and abnormal) responses. This is one reason why the curve is called the "normal" curve. Normal curve criteria are used for determining normal ranges for both medical testing and educational testing.

A good example of the use of curve in this way is in determining educational programs for children. Children are often categorized and assigned to special education programs based at least in part on their IQ scores. For example, an IQ of less than 70 (2sd's below the mean) is one of the criteria for labeling a child as 'mentally retarded.

Do you think this use of the normal curve is appropriate? Should we be applying statistical criteria in diagnosis?   Should statistical criteria be used deciding appropriate educational programming? Give relevant examples to support your answer.

(2). A medical aptitude test has been administered over a period of years to 8000 senior premedical students from a large number of US colleges and universities. The frequency distribution of scores very closely approximates the normal curve and has a mean of 90 and a standard deviation of 16. Using this information, answer the following questions:

Another medical college accepts either this medical aptitude test score or a GRE for admission. They routinely convert the medical school aptitude test scores to equivalent GRE scores (mean = 500 and standard deviation = 100), What would be the GRE equivalent for a raw score of 120?

(3). Scores on Wechsler Adult Intelligence Scale (WAIS) approximate a normal curve with a mean of 100 and a standard deviation of 15. What proportion of IQ scores are
(a)    above Kristen’s 125 ?
(b)    below 82?
(c)    Within 9 point of the mean?
(d)    More than 40 points from the mean?

### STAT101 Introduction To Statistics

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## More STAT101 STAT101 Introduction To Statistics: Questions & Answers

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### MBA5205 Association Rules in an Applied Setting

Learning Objectives 1) Select technology components and current practices related to information systems in organizations (MBA LG 5). 2) Explore and apply data-mining techniques in a real-world setting. This project is an INDIVIDUAL project.  Everyone must turn in their own proj ...

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### Management

Visit the Australian Stock Exchange website, www.asx.com.au and from “Prices and research” drop-down menu, select “Company information”. Type in the ASX code “NAB” (National Australia Bank), and find out details about the company. Also, type in the ASX code &ldquo ...

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### CISC 520 Data Engineering and Mining

Task: All evaluations in this class will be centered around your development of the final project presentation which will follow the format of an academic research manuscript as follows: Introduction/Background: Here you will introduce your subject and state your hypothesis or aim/motivation. For ...

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### HI6007 Statistics for Business Decisions

Task: Learning Outcomes: 1. Understand appropriate business research methodologies and how to apply them to support decision-making process. 2. Understand various qualitative and quantitative research methodologies and techniques. 3. Explain how statistical techniques can solve business problems ...

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