math

1.if 3 out of 24 marked scripts have mathematical error and 5 are to be randomly selected for audit,what is the probability that none of the marked scripts with mathematical errors will be chosen?

2.ten identical PCs are in the inventory of a dealer,one has a hidden defect.if 3 are to be shipped,and the computers are selected in such a way that each has the same probability of being shipped,find
I.the number of ways in which 3 of the 10 PCs can be selected for shipment.
II.the total number of ways in which 3 of the 10PCs can be selected so that the one with the hidden defect will be included for shipment.
III.the probability that the computer with the hidden defect will be shipped.

1. 👍 0
2. 👎 0
3. 👁 107
1. 1. Number of marked scripts with mathematical errors=3.
2. Number of marked scripts without mathematical errors= 24-3 = 21
3. The probability of selecting 5 scripts without mathematical errors = 5/21 = 0.24.

1. 👍 0
2. 👎 0
posted by Haruna

Similar Questions

1. stats

if you randomly answer a t/f test and want to figure the possibililty of gettng at least an 80......how do you start and then once you have done this, what if you want to try it 4 more times? HELP Let N be the number of questions.

asked by holly on July 5, 2007
2. Physics/Statistics

We're actually learning propigation of error in my chem class, but it seems to be used equally as much in Physics/Stats. My teacher showed us two methods of doing it: REAL Method (Addition/Subtraction): square root[(error absolute

asked by Amiga on September 14, 2006
3. math

on november 1, the holiday house store marked up a \$50 decoration by 30%. On November 28, the decoration was marked down 10%. It was marked up 20% on sales on December 1. Finally it was marked down 70% on December 26. Find the

asked by betty on February 5, 2012
4. math

how about (5-3)x2 + 8(5-2) ? To me these are really just "puzzles" and do not actually require much mathematical ability. The best and often only way is to by 'trial and error'. what is the rule when grouping numbers? example I

asked by Reiny on March 28, 2007
5. Chemistry

How do you find Absolute error and how do you find relative error? Absolute error is the difference between the experimental value and the actual value. Relative error, usually expressed as a percent, is the error relative to the

asked by mZ. YoU on February 17, 2007
6. grammar

Matching. Each of the following sentences has an agreement error in it. Match the correct type of agreement error to the sentence. *The patient was placed in the wheelchair with the fractured tibia. A. Verb tense agreement error

asked by Anonymous on January 11, 2016
7. Pre-cal

use mathematical induction to prove that 1^2 + 2^2 + 3^2 + ... + n^2 = n(n+1)(2n+1)/6 for all positive integral values of n. My work: n=1: 1(1+1)(2(1)+1)/6 = 1(2)(3)/6 = 6/6 = 1. 1^2+2^2+3^2...(n-1)^2+n^2= [(n-1)(n-1)+2n(n-1)+1]/6

asked by Lucy on January 3, 2009
8. GRAMMAR

Good Morning- Each of the following sentences has an agreement error in it. Match the correct type of agreement error to the sentence. a. Verb tense agreement error b. Subject/verb agreement error c. Pronoun agreement error d.

asked by Leslie on May 13, 2011
9. Sentence Agreement Errors

What agreement error would this sentence be? One of the options concerning his future surgeries were discussed with him. Verb tense agreement error, subject/verb agreement error, pronoun agreement error, modifier placement error

asked by Becky on December 12, 2013
10. operating system

I been working on this forever can you please show fully how to create these 2 small scripts. It would be very appreciated! the editor im using is VI 1. Write a script called simple.sh to do the following: Displays "There are no

asked by Zarthemad on December 1, 2008

More Similar Questions