Math
posted by Maggie .
A sample of 4 different calculators is randomly selected from a group containing 47 that are defective and 29 that have no defects. What is the probability that all four of the calculators selected are defective? Round to four decimal places.

Math 
Damon
47+29 = 76
first one 47/76
second on 46/75
third one 45/74
fourth one 43/73
multiply :)
Respond to this Question
Similar Questions

Statistics
4 calculators were selected at random from a sample of 44 calculators that were defective and 22 that were in good condition. Find the probability that all 4 calculators are defective. Ok, I'll just start this one. There are 66 choose … 
Math
My question is to get a better understanding of this. Basically, these two problems, I did it WITHOUT replacement. So I would multiply each defects and so forth. My question is, would I have to subtract the total from 1 in the second … 
Statistics
A sample of 4 different calculators is randomly selected from a group containing 17 that are defective and 36 that have no defects. What is the probability that at least one of the calculators is defective? 
statistics
A sample of 4 different calculators is randomly selected from a group containing 10 that are defective and 35 that have no defects. What is the probability that at least one of the calculators is defective? 
Math
An electronic store receives a shipment of 30 graphing calculators, including 6 that are defective. Four of these calculators are selected to be sent to a local high school. How many selections can be made? 
probability
The J.O. Supplies Company buys calculators from a Korean supplier. The probability of a defective calculator is 10%. If 15 calculators are selected at random, what is the probability that 4 or more of the calculators will be defective 
math
In a shipment of 50 calculators,4 are defective. Two calculators are randomly selected and tested. What is the probability that both are defective if the first one is not replaced after being tested? 
math
A manufacturer of calculators would like to separate defective calculators from calculators that are acceptable. Through an error, a shipment of 12 calculators is sent out containing 3 defective calculators and 9 working calculators. … 
math
A manufacturer of calculators would like to separate defective calculators from calculators that are acceptable. Through an error, a shipment of twelve calculators is sent out containing three defective calculators and nine working … 
math
A manufacturer of calculators would like to separate defective calculators from calculators that are acceptable. Through an error, a shipment of twelve calculators is sent out containing three defective calculators and nine working …