Question: Find the variance of the given random variable. A child has lost her ring somewhere along a 20-foot line in a narrow strip of grass.

Find the variance of the given random variable.
A child has lost her ring somewhere along a 20-foot line in a narrow strip of grass. Let X denote the location (lengthwise) along the grass where it was dropped, so
fX(x) = 1/20
for 0 ≤ x ≤ 20,
and fX(x) = 0 otherwise.

Step by Step Solution

★★★★★

3.21 Rating (154 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

VarX 400 ... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

760-M-S-P (6384).docx

120 KBs Word File

Students Have Also Explored These Related Statistics Questions!

Find the variance of Y if 2sys3 0, elsewhere

Find the expected value of the random variable. Also find the variance of the random variable and its standard deviation. XP(x) 0 ....0.3 1 ....0.2 2 ....0.2 3 ....0.1 4 ....0.1 5 ....0.1

Find the variance of the sample standard deviation, Assuming that the Xi are IID Gaussian random variables with mean and variance 2. 73 m=1

Probability and Statistics - Problem Set c Keith M. Chugg October 2, 2015 1 Preliminaries, Combinatorics, Set Probability 1.1. A number of bats are in a cave. 2 bats can see out of their left eye. 3...

1 2.3 Definition of a Discrete Probability Function Definition: Let S be a discrete sample space from some experiment. A function P, defined on all events in S, is said to be a probability function...

Please explain to me clearly and show how to do the two suppositions in the (question) file. Please take a look at the (notes) file and see the material up to the questions will be needed to answer...

23 Nickel and Dimed: On (Not) Getting By in America BARBARA EHRENREICH Major changes in welfare legislation in 1996 eliminated cash payments to millions of America's poor, requiring them to find...

Planning is one of the most important management functions in any business. A front office managers first step in planning should involve determine the departments goals. Planning also includes...

\f\f\fChapter 2 Service Strategy Learning Objectives After completing this chapter, you should be able to: 1. Formulate a strategic service vision. 2. Describe how a service competes using the three...

Why Hospitals Don't Learn from Failures: ORGANIZATIONAL AND PSYCHOLOGICAL DYNAMICS THAT INHIBIT SYSTEM CHANGE Anita L. Tucker Amy C. Edmondson T he importance of hospitals learning from their...

In a survey conducted by a mail order company a random sample of 200 customers yielded 172 who indicated that they were highly satisfied with the delivery time of their orders. Calculate an...

Q.2 Reena and Meena are partners sharing profits and losses equally. Their position on 31" March, 2020 was as follows: [10] Balance Sleet as on 31" March, 2020 Amount (3) Liabilities Amount Amount...

The degree of operating leverage ( DOL ) is defined as the percentage change in operating cash flow relative to the percentage change in variable costs. True or False True, unselectedFalse,...

What is the primary purpose of the Define Activities process? a) To create the project schedule b) To identify and document the specific actions to be performed to produce the project deliverables c)...

Students very often ask their professors whether they will be curving the grades. The traditional interpretation of curving grades required that the grades have a normal distribution, and that the...

A political analyst wishes to select a sample of n = 20 people from a population of 2000. Use the random number table to identify the people to be included in the sample.

Refer to Exercise 7.17. To find the probability that the sample mean is between 105 and 110, write down the event of interest _______. When xÌ = 105 and xÌ = 110, Find the probability:...

To estimate the amount of lumber in a tract of timber, an owner randomly selected seventy 50-by50foot squares, and counted the number of trees with diameters exceeding 12 inches in each square. The...

A 4-year project, X, with an upfront cost of $20 million is expected to yield the following series of cash flows: $3.60 million in year one, $4.20 million in year two, $5.70 million in year three,...

Question 4 of 6 For 5 years, Janet saved $600 at the beginning of every month in a fund that earned 4.5% compounded annually. a. What was the balance in the fund at the end of the period? Round to...