User Account

All Pages

The life of a semiconductor laser at a constant power is

Assignment Help Basic Statistics
Reference no: EM13614620

The life of a semiconductor laser at a constant power is normally distributed with a mean of 7000 hours and a standard deviation of 600 hours. a. What is the probability that a laser fails before 500 hours? b. What is the life in hours that 95% of the lasers exceed? c. If three lasers are used in a product and they are assumed to fail independently, what is the probability that all three are still operating after 7000 hours?

Please walk me all the steps.

Reference no: EM13614620

Questions Cloud

Now use the z score to calculate the weight that would : a farmer believes that the yields of his tomato plaints have a normal distribution with an average yield of 11 lbs and
Calculate the quality if saturated or the temperature if : steam enters an insulated nozzle with a velocity of 500 ms and a pressure of 5.0mpa and a temperature of 600 degrees
The life of a semiconductor laser at a constant power is : the life of a semiconductor laser at a constant power is normally distributed with a mean of 7000 hours and a standard
What is a simple way to increase the performance and : a car air conditioning system operates with r-134a in the peak summer outside at 100degf and inside desired at 77degf.
The life of a semiconductor laser at a constant power is : the life of a semiconductor laser at a constant power is normally distributed with a mean of 7000 hours and a standard
Despite the limits of this type of system ie low work : refrigerant 134a is the working fluid in an organic rankine cycle. saturated vapor at 60degc enters the turbine and the
An urn contains four red balls seven black balls and five : an urn contains four red balls seven black balls and five green balls. if two balls are selected at random without
Refrigerant 134a at a pressure of 08 mpa and a temperature : refrigerant 134a at a pressure of 0.8 mpa and a temperature of 50 c undergoes a process until the pressure is 0.1 mpa
Compute the mean median and standard deviation for all of : for each of the following two problems analyze the data given in the related data le. write up your results in the

Reviews

Write a Review

Basic Statistics Questions & Answers

  Use a two-tailed test with alpha 005 to determine whether

a new over-the -counter cold medication includes a warning label stating that it may cause drowsiness. a researcher

  Determining point estimate and confidence interval

The management of a department store is interested in estimating the difference between the mean credit purchases of customers using the store's credit card versus those customers using a national major credit card.

  Hypothesis testing of traffic lights

Most traffic lights are set so that there is enough time for pedestrians to cross the road safely. A recent study indicates that a large number of elderly cannot get across the road in the usual 15 seconds allowed.

  Determining the point estimate

Determine the point estimate? Give the symbol and value.

  Probability distribution of x

What can we say about the probability distribution of x? Is it approximately normal? What are the mean and standard deviation?

  Probability based on relative-frequency

Find out the expected winnings for a person who buys one ticket.

  Sample mean and t-test

At the .01 significance level, can we conclude that the 30-yeer mortgage rate for small banks is less than 6 percent? Estimate the  p -value.

  Determine hypotheses to be tested

Take pM and pF to be the proportions of all college males and females who worked last summer. We conjectured before seeing the data that men are more likely to work. The hypotheses to be tested are?

  Criterion for rejection or nonrejection of null

Which of the t-test methods are you going to use and why? Formulate the null and alternative hypothesis. Determine the criterion for rejection or nonrejection of the null. What is the t-statistic for this analysis

  Standard error of the mean as the sample size

Compute the standard error of the mean O(funny o with line) line over x, for sample sizes of 50, 100, 15o, and 200. What can you say about the size of the standard error of the mean as the sample size is increased?

  A student who waits for two buses every day records the

a a student who waits for two buses every day records the status of the arrival of each bus. the bus is either late on

  Data screening activity

Write a sample result section, discussing your data screening activity (this section should be in APA format).

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd