1. When raw scores from normal distribution are converted to standard scores, the resulting distribution has a mean equal to ________ and SD equal to _________.

2. Scores on a particular test are normally distributed with a mean of 70 and an SD of 15. Between what two scores would you expect?
a. 68% of the scores to fall between ____________ and _____________? b. 95% of the scores to fall between ____________ and _____________?

3. A distribution of scores has a mean of 70 and an SD of 5. The following four scores were drawn from that distribution: 58, 65, 73 and 82.
a. Transform the raw scores to standard scores.
b. Calculate the percentile for each score (percentage below the score).

4. According to documented norms, the distribution of gestation time is approximately normal with mean 266 days and SD 16 days.
a. What is the probability (percentage) that a baby has a gestation time greater than 280 days?
b. What is the probability (percentage) that a baby has a gestation time less than 250 days?
c. What is the probability (percentage) that a baby has a gestation time between 242 and 270 days?
5. The average time between infection with the AIDS virus and developing AIDS has been estimated to be 8 years with a standard deviation of about 2 years. Approximately what fraction of people develop AIDS within 4 years of infection? a. 5%

b. 2.5%
c. 32%
d. 16%
e. 1%
6. The distribution of the heights of students in a large class is roughly bell-shaped. Moreover, the average height is 68 inches, and approximately 95% of the heights are between 62 and 74 inches. Thus, the standard deviation of the height distribution is approximately equal to:

...MN 215 A & B
October 02, 2012
ZScores, Z Tests and t Tests
Overview and Review
At the beginning of the course we learned that there are two branches of statistics, namely, parametric and non-parametric. Further we learned that parametric statistical processes are broken down into two other categories, namely descriptive statistical processes and inferential. We learned also that descriptive statistics (mean, mode, median, standard...

...Shannon Ciuk Honors 100-01 April 29, 2011
Q&A #10
The article The Human Mind and Human Art by Trevor Pateman was the most interesting to me. The reason being I am a psychology major and he made a number of references to psychology studies…it even sounded like a psychology paper. The psychologist that stuck out the most to me was Chomsky. A reason for this may be the fact that we recently just covered his work in my developmental psychology class. I found it very...

...Altman Z-score is a financial model to predict the likelihood business failure in a company and created by Edward I. Altman in 1968. Altman developed a z-score model using ratios as its foundation. The purpose of the Z-score model is to measure a company's financial health and predict the probability of failure up to 2-3 years in advance by using a weighting system combined with four or five financial ratios....

...“Can Altman Z-score Models Predict Business
Failures in Greece?”
Nikolaos Gerantonis
Department of Management and Business Administration
University of Piraeus, 4 Ag. Marinas Str, Greece
Konstantinos Vergos
PhD, Director of Research Department, Cyclos Securities S.A
39 Panepistimiou Str,10564, Athens, Greece
Apostolos G. Christopoulos
Corresponding Author
University of Athens, Department of Economics
5 Stadiou Str, Athens 105 62, Greece
E-mail:...

...Lourda Finn
26/05/2014
The Judgement Title: Director of Public Prosecutions –v- Tully.
Neutral Citation: [2009] IECC 1.
Date of Delivery: 07/13/2009.
Court: Circuit Court.
Composition of Court:
Judgement by: White Michael J.
Status of Judgement: Approved.
1. Introduction to Court Report.
The background evidence in this case was first heard in the Navan District Court on 14/5/2007. Mr Kevin Tully was convicted under the Road Traffic Act 1961. He was fined £500 and the...

...1.) PREOPERATIVE DIAGNOSIS: Lesion of vocal cords.
POSTOPERATIVE DIAGNOSIS: Tumor of left vocal cord
OPERATION PERFORMED: Laryngoscopy.
The patient is a 25-year-old student of opera who presented with a lesion of her left
vocal cord seen on office laryngoscopy. Today she is seen in the ambulatory suite for
further examination of this lesion, using the operating microscope. After the
administration of local anesthesia, a direct endoscope is introduced. The operating microscope is...

...Practice Problems
PARTI: MULTIPLE CHOICE
1. The CPI index:
A. Is usually highly correlated with the GDP deflator
B. Measures the price of a consumption basket; the GDP deflator, instead, measures the cost of a basket of locally produced goods
C. Is sensitive to the high volatility of the price of food and energy
D. All of the above
2. Looking at the composition of GDP in the last 50 years, we can claim that:
A. Both in India and the US the consumption share has...