Printed circuit cards are placed in a functional test after being populated with semiconductor chips. A lot contains 140 cards, and 20 are selected without replacement for functional testing. Type of Distribution: If 20 cards are defective, what is the probability that at least 1 defective card is in the sample? If 5 cards are defective, what is the probability that at least 1 defective card appears in the sample?

Refer to the sample data for​ pre-employment drug screening shown below. If one of the subjects is randomly​ selected, what is the probability that the test result is a false​ positive? Who would suffer from a false positive​ result? Why?   Pre-Employment Drug Screening Results   Positive test result Negative test result     Drug Use Is Indicated Drug Use Is Not Indicated Subject Uses Drugs 42 11 Subject Is Not a Drug User 17 34

A manufacturing machine has a 5% defect rate. If 10 items are chosen at random, what is the probability that at least one will have a defect?

A box contains a shipment of n(n>4) computer chips, of which four are defective. Four chips are randomly selected and examined as to whether or not the chips are defective. Describe the sample space for this experiment. What is the probability that a. Exactly one of the four chips is defective? b. all four chips are defective? c. Two chips are defective?

The probability that an individual is left-handed is 12%. In a randomly selectedclass of 30 students, what is the probability of finding exactly 4 left-handedstudents?