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Work Assignment 1 for
MSIS 385 section 01 Last modified on 9/15/99<!#echo
var="LAST_MODIFIED"> Due
September 22 1998 in class 

Note: 
ü Make sure to put your name, student ID number and the date on the handout ü The homework is due at the beginning of the class period on the due date ü Late homeworks will lose 25% ü
Remember: If you miss more than two homework
assignments you will automatically fail the course, regardless of your score
in exams and other assignments 



Question1 
Do problem 7.16 on page 259 of your text. 

Question 2 
It is estimated that 70% of kids prefer chocolate ice cream over vanilla. If a group of 75 kids are chosen at random, what is the probability that between 35 and 46 (inclusive) prefer Chocolate over vanilla? (Set up the problem in detail and write down the formulas as clearly as possible; then you may use Excel or other computational methods to compute the result.) 

Question 3 
Do question 8.16 on page 293 of your text. 

Question 4 
a. For a random variable Z which has a Standard normal distribution use the table on page E4 (appendix E page 4) of your text and calculate the probability Pr[0.79 < Z < 1.07] b. For a random variable X with normal distribution, m =93, and s =181, find Pr[250< X < 183] 

Question 5 
In problem 2 above use normal distribution to approximate the solution and compare your result to the exact solution. 




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