Question: 4) For stratified sampling, the population variance in stratum h is a. b. Nh (Yhj - h) Nh -1 [EJNh1Yh2j - NhVh2] Show that

4) For stratified sampling, the population variance in stratum h is a. b. Nh (Yhj - h) Nh -1 [EJNh1Yh2j - NhVh2] Show that S} = NhI Let bhj be a random variable where then Var(bhj) = 1 Show that Var(ystr) = Hint: XaXb 0, otherwise and Cov(bhj, bhk) = Nh I (92 (A- Nh Nh Nh(Nh 1) Nh 1

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

To solve the problem lets approach each part step by step Part a We need to show that S 2 h 1 N h 1 ... 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

Students Have Also Explored These Related Mathematics Questions!

4) For stratified sampling, the population variance in stratum h is Nn ( ynj - Yn) Sh = Nn - 1 j=1 a. Show that Sh = ~ 1 Nh - 1 b. Let bri be a random variable where 1, if j E Sn bnj = 10, otherwise'...

In January 1995, the Office of University Evaluation at Arizona State University surveyed faculty and staff members to find out their reaction to the closure of the university during Winter Break,...

need asap Question 4: Explain stratified sampling with an appropriate example. [2 Marks]

Hello , i badly need your help maam/sir :( I promise to rate as helpful and will provide a feedback. Please ?? Application ? 1. Choose the best sampling method to obtain the individuals in the sample...

MTN Eswatini .ill (@)' $ 11% 09:06 QUESTION ONE [48] SECTION A: MULTIPLE-CHOICE QUESTIONS: FIVE alternatives are provided for each of the following questions. Choose the correct alternative for each...

\fJournal of Mixed Methods Research http://mmr.sagepub.com Mixed Methods Sampling: A Typology With Examples Charles Teddlie and Fen Yu Journal of Mixed Methods Research 2007; 1; 77 DOI:...

Describing Data Once we have collected data from surveys or experiments, we need to summarize and present the data in a way that will be meaningful to the reader. We will begin with graphical...

I Is a random sampling which uses a 11st 01 all the elements in the population and then elements are being selected based on the kth consistent intervals. To get the kth interval, divide the...

Explain the relevance of TQM in MNC's?

For some metal alloy, a true stress of 415MPa (60,175psi) produces a plastic true strain of 0.475. How much will a specimen of this material elongate when a true stress of 325MPa (46,125psi) is...

25. LO.2 Andy had AGI of $80,000 for 2012. He was injured in a rock-climbing accident and paid $5,200 for hospital expenses and $2,800 for doctor bills. Andy also incurred medical expenses of $2,400...

Find the reliability of the following product design, the values in the chart are success rates of the components. If the minimum required reliability is 4 5 % . This proposal is accepted or not? (...

Explain the relationship between language and culture

Compare and contrast elaborated and restricted codes

Compare and contrast direct versus indirect styles; affective versus instrumental styles; personal versus contextual styles; and elaborate, exacting, and succinct styles of language use across...