HomeworkLib
Question

I need the solution of these exercises step by step: It is known that the lifetime...

I need the solution of these exercises step by step: It is known that the lifetime of a certain brand of car batteries is exponentially distributed with an average of 4 years. An automaker needs the batteries
that you use on your vehicles last at least 4 years so that your profit is not harmed. If the automaker used batteries of that brand, what is the probability that a
given battery does not harm if it has survived 3 years?
0.075
(b) 0.472
(c) 0.676
(d) 0.221
(e) 0.779

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

0 0
Add a comment
Know the answer?
Add Answer to:
I need the solution of these exercises step by step: It is known that the lifetime...
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

  • The lifetime of a certain brand of battery is known to have a standard deviation of...

    The lifetime of a certain brand of battery is known to have a standard deviation of 19.8 hours. Suppose that a random sample of 100 such batteries has a mean lifetime of 33.3 hours. Based on this sample, find a 90% confidence interval for the true mean lifetime of all batteries of this brand. Then complete the table below Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. 0 What is the...

  • 15.    A certain type of automobile battery is known to have a lifetime which is normally...

    15.    A certain type of automobile battery is known to have a lifetime which is normally distributed with mean 1,200 days and standard deviation 90 days. For how many days should these batteries be guaranteed if the manufacturer wants to replace only 20% of the batteries sold because they "died" before the guarantee expired?           A.       1052           B.       1105           C.      1124           D.      1094 16.    A particular television commercial is understood by 30% of first graders and 65% of fourth graders....

  • I NEED STEP BY STEP SOLUTION PLEASE AND THANK YOU Your firm needs to either buy...

    I NEED STEP BY STEP SOLUTION PLEASE AND THANK YOU Your firm needs to either buy or lease $240,000 worth of vehicles. These vehicles have a life of 4 years after which time they are worthless. The vehicles belong in CCA class 10 (a 30% class) and can be leased at a cost of $70,000 a year for the 4 years. The lease payments are to be made at the beginning of the year. The corporate tax rate is 30%...

  • NEED SOLUTION FOR THIS PROJECT STEP BY STEP WITH DETAILS. AS EARLY AS POSSIBLE. Linear Algebra...

    NEED SOLUTION FOR THIS PROJECT STEP BY STEP WITH DETAILS. AS EARLY AS POSSIBLE. Linear Algebra Project : Urban Population Dynamics * This project is about population modeling and how linear algebra tools may be used to study it. Background Population modeling is useful from different perpectives : 1. planners at the city, state, and national level who look at human populations and need forecasts of populations in order to do planning for future needs. These future needs include housing,...

  • I need help with question 7.12. I looked at the step-by-step solution for that one but someone posted a comment saying...

    I need help with question 7.12. I looked at the step-by-step solution for that one but someone posted a comment saying that the answer is wrong and no one has commented on what the correct answer should be 201 Problems Determination of ROR 7.7 If a manufacturer of slectronic devices invests S650,000 in equipment for making compact piezo electric accelerometers for general purpose vibra Lion measurement estimate the rate of return from revenue of $225.000 per year for 10 years...

  • Hi, I need checking on all the work. If anything is wrong then show me step...

    Hi, I need checking on all the work. If anything is wrong then show me step by step how is done. 11. Obtain a Cu 2 solution of unknown concentration. Write the unknown number on the data sheet. 12. Measure the absorbance of your standard solution, the two dilutions, and the unknown solution. Record these readings on the data sheet. All measurements will be made in the same cuvette and with the instrument set at a wavelength of 630 nanometers...

  • I NEED IMMEDIATE HELP PLEASE!! What is the answers to these 9 questions! (No) work needs...

    I NEED IMMEDIATE HELP PLEASE!! What is the answers to these 9 questions! (No) work needs to be shown. just the answers please! Thank you!! Twenty-five students were surveyed and asked the number of cell phones they have owned in their lifetime. The data is shown below in a (partial) frequency table. What percent of students have owned at least 2 cell phones in their lifetime? Round to the nearest whole number. Data Value Frequency Cumulative Relative Frequency Relative Frequency...

  • second attempt. need asap please 2-4 sentences summarizing the article 4 interesting quotes from the article...

    second attempt. need asap please 2-4 sentences summarizing the article 4 interesting quotes from the article and 4 points explaining each quote In the first few years of the new millennium, at the height of the boom in the offshore call-center business, Tata Consultancy Services, the Indian technology-services giant, made the counterintuitive decision to divest its call-center operations. Why? Because although outsourced call centers were a fast-growing piece of its current business, TCS’s leadership had come to believe that they...

  • i have the case study question with the answers but i need help to re-write the...

    i have the case study question with the answers but i need help to re-write the answers. please see the attached files Case Study Analysis (CSF3003) Assessment Description and Requirements CLO1: Case Study 1 Ahmad lef home to study master and PhD in Australia. He has fees for the first semester only. After he arrived to Sydney and settled down, he start looking for a part-time job to save money for the next term. Ahmad has some experience on making...

  • Please read the article and answer about questions. You and the Law Business and law are...

    Please read the article and answer about questions. You and the Law Business and law are inseparable. For B-Money, the two predictably merged when he was negotiat- ing a deal for his tracks. At other times, the merger is unpredictable, like when your business faces an unexpected auto accident, product recall, or government regulation change. In either type of situation, when business owners know the law, they can better protect themselves and sometimes even avoid the problems completely. This chapter...

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