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# Spring 2013 (Total Marks 15)

23:59, July 02, Date 2013

STUDENTS ARE STRICTLY DIRECTED TO SUBMIT THEIR ASSIGNMENT BEFORE OR BY DUE DATE. NO ASSIGNMNENT AFTER DUE DATE WILL BE ACCEPTED VIA E.MAIL).

### Rules for Marking

It should be clear that your Assignment will not get any credit IF:

• The Assignment submitted, via email, after due date.
• The submitted Assignment is not found as MS Word document file.
• There will be unnecessary, extra or irrelevant material.
• The Statistical notations/symbols are not well-written i.e., without using MathType software.
• The Assignment will be copied from handouts, internet or from any other student’s file. Copied material (from handouts, any book or by any website) will be awarded ZERO MARKS. It is PLAGIARISM and an Academic Crime.
• The medium of the course is English. Assignment in Urdu or Roman languages will not be accepted.
• Assignment means Comprehensive yet precise accurate details about the given topic quoting different sources (books/articles/websites etc.). Do not rely only on handouts. You can take data/information from different authentic sources (like books, magazines, website etc) BUT express/organize all the collected material in YOUR OWN WORDS. Only then you will get good marks.

### Objective(s) of this Assignment:

This assignment is uploaded in order to build understanding about the properties of:

• Binomial distribution
• Hyper geometric distribution
• Poisson distribution
• Normal distribution

Assignment No: 2 (Lessons 28-30)

Question 1:                                                                                                                   Marks: 4+4=8

a)  Suppose 4 dresses are randomly chosen without replacement from the total of 8 dresses (5 red and 3 white). Calculate the probability of getting exactly 2 red dresses out of 5 red dresses. (Solve using hypergeometric distribution)

b)   A random variable “X” following binomial distribution with n=5 and p=0.5 Calculate the mean, variance and Coefficient of Variance.

Question 2:                                                                                                                   Marks: 4+3=7

a)  One hundred passengers have made reservations for a train. If the probability that a passenger who has a reservation will not show up is 0.01, what is the probability that exactly 2 will not show up? (Use appropriate distribution)

b)  A certain type of car battery lasts on an average 2 years, with a standard deviation    of 0.5 year. Assuming that the battery lives are normally distributed, find the probability that a given battery will last less than 2.5 years.

-END-

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Views: 8769

### Replies to This Discussion

Koi complete or ok solution upload kr day bahiiiiiii

exactly

ho jao tayar sary aa gaya compleat solution

kider hay complete solution

Question No. 1 (a) & (b)

Question No. 2 (a) & (b)

THANKS bRo

thanks to all for help but i couldn't understand how to calculate the value of z from table

Thanks SNA G

sana mere pas mathtype software nai hua wa tbi formula b nai mil rhy to bta dain ma kysy solve krn plz... any1 help me. aj grace day b ha

sna butt gud keep itup & thanks for sharing

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