Questions from Applied Statistics

Q: Semiconductor lasers used in optical storage products require higher power levels forwrite

Semiconductor lasers used in optical storage products require higher power levels forwrite operations than for read operations. High-power-level operations lower the useful life of the laser. Lasers i...

Q: A steel plate contains 20 bolts. Assume that 5 bolts are

A steel plate contains 20 bolts. Assume that 5 bolts are not torqued to the proper limit. Four bolts are selected at random, without replacement, to be checked for torque. a. What is the probability t...

Q: If P(A | B) = 0.3,

If P(A | B) = 0.3, P(B) = 0.8, and P(A) = 0.3, are the events B and the complement of A independent?

Q: If P(A) = 0.2, P(

If P(A) = 0.2, P(B) = 0.2, and A and B are mutually exclusive, are they independent?

Q: A batch of 500 containers of frozen orange juice contains 5 that

A batch of 500 containers of frozen orange juice contains 5 that are defective. Two are selected, at random, without replacement, from the batch. Let A and B denote the events that the first and secon...

Q: Disks of polycarbonate plastic from a supplier are analyzed for scratch and

Disks of polycarbonate plastic from a supplier are analyzed for scratch and shock resistance. The results from 100 disks are summarized as follows: Let A denote the event that a disk has high shock re...

Q: Redundant array of inexpensive disks (RAID) is a technology that

Redundant array of inexpensive disks (RAID) is a technology that uses multiple hard drives to increase the speed of data transfer and provide instant data backup. Suppose that the probability of any h...

Q: A test of a printed circuit board uses a random test pattern

A test of a printed circuit board uses a random test pattern with an array of 10 bits and each is equally likely to be 0 or 1. Assume the bits are independent. a. What is the probability that all bits...

Q: The probability that a lab specimen contains high levels of contamination is

The probability that a lab specimen contains high levels of contamination is 0.10. Five samples are checked, and the samples are independent. a. What is the probability that none contain high levels o...

Q: A player of a video game is confronted with a series of

A player of a video game is confronted with a series of four opponents and an 80% probability of defeating each opponent. Assume that the results from opponents are independent (and that when the play...