HomeworkLib
Question

You purchased 11 hard drives, but 3 of them are defective. Now, you decide to use...

You purchased 11 hard drives, but 3 of them are defective. Now, you decide to use the drives in a configuration which creates an exact copy (or mirror) of a set of data on two or more disks. What is the chance that you are not going to lose any data prematurely if you use two, three, and four of the drives i.e. what’s the probability for each of those setups?

math   Statistics-And-Probability   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

Total number of hard drives=11
Number of defective hard drives=3
Number of undefective hard drives=11-3=8

a)
2 hard drives are used. We ll lose data if we use both the defective hard drives simultaneously.
So the probability of not losing the data is
1-益 = 52/55 = 0.945

b)
3 hard drives are used. We ll lose data if we use all the defective hard drives simultaneously.
So the probability of not losing the data is
1- - 164/165 -0.0939

c)
If we use 4 hard drives simultaneously then in nohow we'll be losing data as there is only 3 defective hard drives.
Hence the probability of not losing data is 1.

0 0
Add a comment
Know the answer?
Add Answer to:
You purchased 11 hard drives, but 3 of them are defective. Now, you decide to use...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • Now you are ready for the implementation phase. For this part we will use the DDL...

    Now you are ready for the implementation phase. For this part we will use the DDL scripts that you created in your previous lab. Execute those scripts again to create the set of normalized relations and populate with data. Part 03  Now that you have a set of relations:  Create at least 1 index of your choice.  Drop one of the tables and then recreate the table but this time create a partitioned table (any type of...

  • # No plagiarism #Decide on the type of motherboard to use in the computer system you...

    # No plagiarism #Decide on the type of motherboard to use in the computer system you are designing. Explain what it is and why you chose it. This from Lab 5.1 Using the information you recorded previously in Step 5, consult Table 5-1 to find out how to enter your system’s setup utility. (Alternatively, when you first turn on your PC, look for a message on your screen, which might read something like “Press F2 to access setup.” Table 5-1:...

  • Matlab code： Task 5 As an engineer you are asked to calculate the approximate surface area of a lake in your local community. In order to do that, you decide to use a GPS to measure the x and y coord...

    Matlab code： Task 5 As an engineer you are asked to calculate the approximate surface area of a lake in your local community. In order to do that, you decide to use a GPS to measure the x and y coordinates at various points around the lake. You pick a starting point and calibrate your GPS position at that point to be (0,0). You begin to walk around the lake collecting the following data below and eventually return to your...

  • this is a single sample t test problem this is math Assignment #11 Single Sample t-Test...

    this is a single sample t test problem this is math Assignment #11 Single Sample t-Test What factor determines whether you should use a z-test or a t-test statistic for a hypothesis test? 11.1 A sample is selected from a population mean of u 30. A treatment is administered to the individuals in the sample and, after treatment, the sample mean found to be M 11.2 = 31.3 with a sample variance of s2 9 If the sample consists of...

  • Hi i will give you a thumbs up if you do this problem correctly. Sorting Analysis Code and Essay ...

    Hi i will give you a thumbs up if you do this problem correctly. Sorting Analysis Code and Essay Due: 4/22/2019(Monday) Introduction And now for something completely different.   Different sorting algorithms are better for different size data sets.   Other sorting algorithms are better for data sets of a specific type – for instance, data that is already ordered. In this assignment you will implement four different sorting algorithms and collect statistics for each of those algorithms while sorting multiple different...

  • ou Decide Scenario Summary Aero Motors, a subsidiary of GenMax world-wide, has a great reputation for...

    ou Decide Scenario Summary Aero Motors, a subsidiary of GenMax world-wide, has a great reputation for producing high-end, luxury cars for primarily the European and Asian markets. The flagship model, the Pinnacle, starts at $50,000 and goes up from there. While the cars enjoy a devoted following and great customer reputation in those markets, the sales of the cars have never taken off in the U.S., primarily because the cars were not attractively priced and had a very limited service...

  • Lab 3 – Array-Based Stack and Queue Overview In this assignment, you will be implementing your...

    Lab 3 – Array-Based Stack and Queue Overview In this assignment, you will be implementing your own Array-Based Stack (ABS) and Array-Based Queue (ABQ). A stack is a linear data structure which follows the Last-In, First-Out (LIFO) property. LIFO means that the data most recently added is the first data to be removed. (Imagine a stack of books, or a stack of papers on a desk—the first one to be removed is the last one placed on top.) A queue...

  • BUSINESS ANALYTICS Late in the summer, before the start of the school year, you decide to...

    BUSINESS ANALYTICS Late in the summer, before the start of the school year, you decide to make a quick phone call to your old college roommate Jeremy Hertz, who now lives in Aspen, Co where he runs a ski-equipment shop. “I love living in a ski town”, says Jeremy. It’s great here all year round! Why don’t you come for Labor Day weekend? It’ll be beautiful, we can do some hiking and eat in all the good restaurants before they...

  • BUSINESS ANALYTICS Late in the summer, before the start of the school year, you decide to...

    BUSINESS ANALYTICS Late in the summer, before the start of the school year, you decide to make a quick phone call to your old college roommate Jeremy Hertz, who now lives in Aspen, Co where he runs a ski-equipment shop. “I love living in a ski town”, says Jeremy. It’s great here all year round! Why don’t you come for Labor Day weekend? It’ll be beautiful, we can do some hiking and eat in all the good restaurants before they...

  • Recursion and Trees Application – Building a Word Index Make sure you have read and understood...

    Recursion and Trees Application – Building a Word Index Make sure you have read and understood ·         lesson modules week 10 and 11 ·         chapters 9 and 10 of our text ·         module - Lab Homework Requirements before submitting this assignment. Hand in only one program, please. Background: In many applications, the composition of a collection of data items changes over time. Not only are new data items added and existing ones removed, but data items may be duplicated. A list data structure...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT