How large a sample is required to be accurate in given value

Reference no: EM13156241

Teachers' salaries A researcher is interested in estimating the average salary of teachers in a large urban school district. She wants to be 95% confident that her estimate is correct. If the standard deviation is $1050, how large a sample is needed to be accurate within $200?

Reference no: EM13156241

Questions Cloud

Which of the physical forces can penetrate water most effect : Which of the physical forces can penetrate water most effectively and can thus be used to locate things in the ocean

Lime reacts with sulfur dioxide to form calcium sulfite : Limestone (CaCO3) is used to remove acidic pollutants from smokestack flue gases. It is heated to form lime (CaO), which reacts with sulfur dioxide to form calcium sulfite

What is kc for the reaction at the temperature : For the reaction: 2NO(g)+2H2(g)-->2H2O(g) at equilibrium in a 4.0L container at 25oC. Suppose 2.5 mol of each component initally is put into the container. At equilibrium 2.5 mol of NO is present. What is Kc for the reaction at the temperature?

Major challenges facing scientists : Once there, watch the videos listed. These videos introduce you to some of the major challenges facing scientists and doctors as they try to combat emerging, highly infectious, and resistant microbes.

How large a sample is required to be accurate in given value : She wants to be 95% confident that her estimate is correct. If the standard deviation is $1050, how large a sample is needed to be accurate within $200?

Why is the ocean layered? : Why is the ocean layered? Explain the PHYSICAL CAUSES of layering, and describe the major layers in the ocean. Feel free to include figures.

Prepare a statement of cash flows for sondegaard corporation : Addtl. Info: Investments were sold at a loss (not extraordinary) of $7,000; no equipment was sold; cash dividends paid were $50,000; and net income was $160,000 Prepare a statement of cash flows for 2010 for Sondegaard Corporation.

What do these observations reveal about the mechanisms : XYY humans are fertile males. XXX humans are fertile females. What do these observations reveal about the mechanisms of sex determination and dosage compensation?

Improved organizational communication : Mediated communication and social media (e.g., email, blogs, Facebook, Skype, and Twitter) have played a major role in changing the way that organizations engage in communication with their customers and with employees internally. As we have learn..

User Account

All Pages