The lifetime in hours of an electronic tube is a random variable having a probability density function
Question:
The lifetime in hours of an electronic tube is a random variable having a probability density function given by
f(x) = xe-x x ≥ 0
Compute the expected lifetime of such a tube.
Fantastic news! We've Found the answer you've been seeking!
Step by Step Answer:
Answer rating: 66% (9 reviews)
We have fx xex x0 ...View the full answer
Answered By
Amit Kumar
I am a student at IIT Kanpur , which is one of the prestigious colleges in INDIA.
Cleared JEE Advance in 2017.I am a flexible teacher because I understand that all students learn in different ways and at different paces. When teaching, I make sure that every student has a grasp of the subject before moving on.
I will help student to get the basic understanding clear. I believe friendly behavior with student can help both the student and the teacher.
I love science and my students do the same.
4.90+
44+ Reviews
166+ Question Solved
Related Book For
Question Posted:
Students also viewed these Mathematics questions
-
The time to failure in hours of an electronic component subjected to an accelerated life test is shown in Table 4E.1. To accelerate the failure test, the units were tested at an elevated temperature...
-
The inside diameter of a cylindrical tube is a random variable with a mean of 3 inches and a standard deviation of 0.02 inch, the thickness of the tube is a random variable with a mean of 0.3 inch...
-
The concentration of a reactant is a random variable with probability density function a. What is the probability that the concentration is greater than 0.5? b. Find the mean concentration. c. Find...
-
Kevin Steven opened a small tax-preparation service. Steven Tax Services trial balance at the end of its second year of operation is as follows. The following information is also available: a. Office...
-
Given this equilibrium, predict the direction of shift for each stress. H2(g) + F2(g) + 2HF (g) + 546 kJ a. Increased temperature b. Addition of H2 c. Decreased pressure
-
Insert in the following table one advantage and one disadvantage of operating a business as (a) a sole trader, (b) a partnership, (c) as a limited liability company. Type of entity Advantage...
-
Peer evaluations are a controversial and sensitive issue on many boards. What is your opinion about them and why?
-
Sue Peters is the controller at Vroom, a car dealership. Dale Miller recently has been hired as bookkeeper. Dale wanted to attend a class on Excel spreadsheets, so Sue temporarily took over Dales...
-
Individual investors are more likely to invest in mutual funds than corporations. Why do individuals prefer mutual fund investments? In addition, explain the economic reasons why mutual funds and...
-
The Public Service Board (PSB) awarded two contracts worth a combined $1.07 million to improve (i.e., deepen) a retention basin and reconstruct the spillway that was severely damaged in a flood 2...
-
Let be a random variable that takes on values between 0 and c. That is, P{0 X c} = 1. Show that Var(X) c 2 /4
-
The standard deviation of X denoted SD(X), is given by Find SD(aX + b) if has variance 2 . SD(X) = Var(X)
-
Solve the system of equations. 4 + %3D 0 2 3D 14 2y = 14
-
The probability that a visit to a primary care physician's (PCP) office results in neither lab work nor referral to a specialist is 35% . Of those coming to a PCP's office, 30% are referred to...
-
You are an elementary school principal. Your district superintendent returns from a national conference with an interest in implementing an expensive software program for elementary schools across...
-
Break Even with Multiple Products Wylies Watering Hole sells fruit smoothies. Last year, Wylie sold a total of 2 4 , 0 0 0 fruit smoothies. Pineapple smoothies outsold Coconut smoothies 2 to 1 ....
-
Strategies to increase sales of the Coca-Cola Aquarius brand What strategies can we do in response to the increase in white labels?
-
Convert hourly wages to annualized salaries and use the resulting data set (15 salaries) to calculate the mean and median salaries. Then calculate your answers to the questions at the bottom of the...
-
The receivables turnover and collection period for Corus Entertainment Inc. were calculated in this chapter, based on the company's financial statements for the 2014 fiscal year. These financial...
-
Which of the following raises the credibility of areport? Which of the following raises the credibility of a report? Multiple Choice avoiding predictions avoiding the use of cause-effect statements...
-
Suppose that n points are independently chosen at random on the circumference of a circle, and we want the probability that they all lie in some semicircle. That is, we want the probability that...
-
Two points are selected randomly on a line of length L so as to be on opposite sides of the midpoint of the line. [In other words, the two points X and Y are independent random variables such that X...
-
Show that f (x, y) = 1/x, 0 < y < x < 1, is a joint density function. Assuming that f is the joint density function of X,Y, find (a) The marginal density of Y; (b) The marginal density of X; (c)...
-
What can you put into place to mitigate risks in a supply chain aspect?
-
Use the cps09mar . csy dataset to estimate the effect of education on earnings. Data description and variable definitions can be found in the document cps09mar_description. pdf. For all questions...
-
See if there are differences in the four survey measures by one demographic (other than gender). Intrinsic Job Satisfaction Extrinsic Job Satisfaction Organizational Commitment . Insert Pivot Chart...
Study smarter with the SolutionInn App