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3 Questions for Assignment 5 - Introduction to Statistics | STAT 1222, Assignments of Statistics

University of North Carolina (UNC) - Charlotte Statistics

Prof. Animikh Biswas

Material Type: Assignment; Professor: Biswas; Class: Intro to Statistics; Subject: Statistics; University: University of North Carolina - Charlotte; Term: Spring 2009;

Typology: Assignments

Pre 2010

Uploaded on 07/28/2009

koofers-user-cb7 🇺🇸

10 documents

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Download 3 Questions for Assignment 5 - Introduction to Statistics | STAT 1222 and more Assignments Statistics in PDF only on Docsity! Homework 5 Stat 1222 (Professor: Dr. A. Biswas) Due: 3/03/09 (Tue) Name: ID#: 1. Find the z-score satisfying the given conditions below. (a) (1 pts) The z−score has 80% of the distributions area to the left. Answer: (b) (1 pts) The z−score has 95 % of the distributions area to the right. Answer: (c) (2 pts) 75% of the distributions area lie between −z and z. Answer: 2. The common final exam scores in statistics 1222 in a certain year were normally distributed with a mean of 75 and a standard deviation of 10. Show work on (a) and (b) below. (a) (3 pts) What is the smallest score that a student can receive and still be in the top five percent? (b) (3 pts) If the bottom 23 % of the class receive a failing grade, what is the minimum score required by a student to pass the course?

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3 Questions for Assignment 5 - Introduction to Statistics | STAT 1222, Assignments of Statistics

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