Let S 2 be the sample variance of a random sample from a distribution with variance
Question:
Let S2 be the sample variance of a random sample from a distribution with variance σ2 > 0. Since E(S2) = σ2, why isn’t E(S) = σ?
Fantastic news! We've Found the answer you've been seeking!
Step by Step Answer:
Answer rating: 100% (7 reviews)
Answered By
Ali Khawaja
my expertise are as follows: financial accounting : - journal entries - financial statements including balance sheet, profit & loss account, cash flow statement & statement of changes in equity -consolidated statement of financial position. -ratio analysis -depreciation methods -accounting concepts -understanding and application of all international financial reporting standards (ifrs) -international accounting standards (ias) -etc business analysis : -business strategy -strategic choices -business processes -e-business -e-marketing -project management -finance -hrm financial management : -project appraisal -capital budgeting -net present value (npv) -internal rate of return (irr) -net present value(npv) -payback period -strategic position -strategic choices -information technology -project management -finance -human resource management auditing: -internal audit -external audit -substantive procedures -analytic procedures -designing and assessment of internal controls -developing the flow charts & data flow diagrams -audit reports -engagement letter -materiality economics: -micro -macro -game theory -econometric -mathematical application in economics -empirical macroeconomics -international trade -international political economy -monetary theory and policy -public economics ,business law, and all regarding commerce
4.00+
1+ Reviews
10+ Question Solved
Related Book For
Introduction To Mathematical Statistics
ISBN: 9780321794710
7th Edition
Authors: Robert V., Joseph W. McKean, Allen T. Craig
Question Posted:
Students also viewed these Business questions
-
Let S2 be the variance of a random sample of size n from N(μ, Ï2). Using the fact that (n 1)S2/Ï2 is Ï2(n1), note that the probability Where Rewrite the inequalities to...
-
Let S 2 be the sample variance of a random sample of size n > 1 from N(, ), 0 < < , where is known. We know E(S 2 ) = . (a) What is the efficiency of S 2 ? (b) Under these conditions, what is the...
-
Let X1, X2,..., Xn be iid from a distribution with mean μ and variance Ï2, and let S2 be the usual unbiased estimator of Ï2. In Example 7.3.4 we saw that, under normality, the...
-
Kyoko is a hard-working college sophomore. One Thursday, she decides to work nonstop until she has answered 220 practice problems for her physics course. She starts work at 8:00 AM and uses a table...
-
Oscar Company is preparing its financial statements for the current year. Which of the following statements is correct? I. A main difference between the income statement and the statement of cash...
-
The discussion topic for the first assessment is Sir Isaac Newton's quote: "I can calculate the motion of heavenly bodies, but not the madness of people." This quote was his response to the collapse...
-
Fill in the Blank. When finite amplitudes of motion are involved, __________ analysis becomes necessary.
-
As CEO of SeaSpray Marine, Ramona Raney knows it is important to control costs and to respond quickly to changes in the highly competitive boat-building industry. When JT Consulting proposes that...
-
Adams Manufacturing Company established the following standard price and cost data. Sales price Variable manufacturing cost Fixed manufacturing cost Fixed selling and administrative cost $ 8.10 per...
-
The owner of Neros company has hired you to analyze her company's performance and financial position, as well as the positions of Iits competitors, Centar and Xermix. However, the data Neros abtained...
-
If X is 2(5), determine the constants c and d so that P(c < X < d) = 0.95 and P(X < c) = 0.025.
-
Let X and Y have the parameters 1 , 2 , 2 1 , 2 2 , and . Show that the correlation coefficient of X and [Y ( 2 / 1 )X] is zero.
-
Mandatory retirement has been abolished in almost all Canadian jurisdictions. This will result in more people working past the traditional retirement ages of 60 to 65. When there was mandatory...
-
There are many more poor people in the United States than there are rich people. If the poor wanted to, they could exercise their power to redistribute as much money as they please to themselves....
-
Define the prisoners dilemma game. a. What assumptions lead to the dilemma? b. What creates the possibility of escaping it? c. What does the standard model say about your answer to b? What does...
-
In Why Higher Real Wages May Reduce Altruism for the Poor, Ball State economist John B. Horowitz considers whether redistribution of income is a public good or a public bad. a. How might income...
-
If you receive a paycheck, what percentage of it is withheld for taxes? What incentive effect does that have on your decision to work?
-
What key psychological assumptions do economists make in their theory of individual choice?
-
Under what conditions does reducing the level of WIP also reduce the number of defectives produced?
-
Two mutually exclusive investment alternatives are being considered. Alternative A requires an initial investment of $20,000 in a machine. Annual operating and maintenance costs are anticipated to be...
-
A boat has a crew of eight: Two of those eight can row only on the stroke side, while three can row only on the bow side. In how many ways can the two sides of the boat be manned?
-
Nine students, five men and four women, interview for four summer internships sponsored by a city newspaper. (a) In how many ways can the newspaper choose a set of four interns? (b) In how many ways...
-
Ten basketball players meet in the school gym for a pickup game. How many ways can they form two teams of five each?
-
For its three investment centres, Stahl Company accumulates the following data: Centre I Centre II Centre III Sales $1,966,000 $4,029,000 $3,927,000 Controllable margin 1,096,700 2,145,960 3,858,880...
-
What is a mirror's radius of curvature if cars 1 9 . 0 m away appear 0 . 3 7 their normal size? Express your answer to two significant figures and include the appropriate units.
-
Reading Coming to a new awareness of organizational culture, Edgar H.Schein: https://docs.google.com/document/d/15yKbiEIwu47U1OnyjYevwz9ly42o2PCi0x-Zz_4C-po/edit In the assigned reading from the...
Study smarter with the SolutionInn App