a. If all your computer data is stored on a hard disk drive with a copy stored on a second hard disk​ drive, what is the probability that during a​ year, you can avoid catastrophe with at least one working​ drive?   b. If copies of all your computer data are stored on three independent hard disk​drives, what is the probability that during a​ year, you can avoid catastrophe with at least one working​ drive?

Q: The principle of redundancy is used when system reliability is improved through redundant or backup…

A: P(failure of a student's clock)=0.126Failing of both the clocks are independent of each other.

Q: Suppose a county’s recent health report gives a pet allergy prevalence of 0.23 for kids. There is a…

A: Given: Probability of pet allergy prevalence, P(A)=0.23 kids Probability of no pet allergy…

Q: Team A and Team B are scheduled to play each other 10 times this season. If each game is played…

A: It is given that  P( team A beat team B ), p = 38% = 0.38 q = 1 - p = 0.62

Q: The​ three-year recidivism rate of parolees in a certain state is about 20​%; that​ is, 20​% of…

A:

Q: In any given year, a factory has a 10% probability of having a serious accident. About every how…

A: Determine for every many number of years might the factory expect to have an accident.   The every…

Q: A single server queuing system with a Poisson arrival rate and exponential service time has an…

A: Given Arrival rate =12 Service rate=20

Q: American League with a .364 batting average. To keep it simple, assume this means that every time he…

A: p = 0.364 n = 12

Q: A carton weighing 250 pounds breaks 1 out of every 5 tables it is placed on. If a carton weighs 300…

A: we only know that a carton weighing 250 pounds breaks 1 out of every 5 tables it is placed on. We…

Q: The Dow Jones Industrial Average has reached 27,164 points this week.  An investment advisor…

A: The probability that a stock she recommends is profitable is 0.40, which is fixed. Thus, we have a…

Q: Suppose that 15% of a population is red-headed, and 10% of the same population is left-handed. If…

A: It is known that, if two events A and B are independent, then P(A and B) = P(A)P(B).

Q: Suppose that you and two friends go to a​ restaurant, which last month filled approximately 90.9% of…

A:

Q: A statistics student plans to use a TI-84 calculator on her final exam. From past experience, she…

A: In this case, each of the calculators has the only option of "being functional" (let us define it as…

Q: Suppose that 80% of drivers are "careful" and 20% are "reckless." Suppose further that a careful…

A:

Q: Suppose it has been observed that an average of six vehicles passes by their house per minute on…

A: Random variables are of 2 types, discrete and continuous. A discrete random variable can only take…

Q: A manufacturer makes two models of an item: model I, which accounts for 81% of unit sales, and model…

A: Consider that event D defines that the model is defective.

Q: Suppose a county's recent health report gives a pet allergy prevalence of Pet allergy Test result…

A: Given in the diagram- P(pet allergy)=0.23P(no pet allergy)=0.77 When test is conducted then the test…

Q: Suppose that at a famous aquarium, a docent found that 35 percent of elementary school children know…

A:

Q: Suppose a 5% of the items produced by a machine is defective. If a quality controller selects two…

A: Given that  Success of probability p =0.05 Number of trials n=2 X~binomial (n,p)

Q: Suppose a county’s recent health report gives a pet allergy prevalence of 0.15 for kids. There is a…

A: Given data, P(Positive | Not have allergy)=0.07 P(Not have allergy)=1-0.15=0.85 P(Negative |…

Q: The principle of redundancy is used when system reliability is improved through redundant or backup…

A: Given:Probability that alarrm clock fails a day = 0.191,We have two such clocks and we have to find…

Q: at the bank of california, past data show that 8% of all credit card holders default at some time in…

A:

Q: The local weather forecaster predicts that there is a 12% chance of rain on each day next week.…

A:

Statements and Logic

Logic is the analysis of general patterns of thoughts without regard to any specific sense of context.