What is the z-score-confidence interval

Assignment Help Business Economics
Reference no: EM131932273

The EPA needs to estimate the average number of iron particles in ppm from our drinking water. They are required to make a 99% confidence interval that has a margin of error no more than 0.37. From nearby water sources they have reason to believe the standard deviation is 2.3. 

What is the z-score they will need for their confidence interval?

Reference no: EM131932273

Questions Cloud

What microaggressions does michael encounter : If you were Mary, what would you do? Specifically, would you call Mrs. K and talk with her, or would you handle it some other way? Explain.
Case Study Report - Discuss the concept of sustainability : MGT300 T117 Assessment Case Study Report. In your report you need to consider: Discuss the concept of sustainability and its relevance to the company featured
Enrique is paying the remaining balance on loan : The amount he borrowed was $2000. Instead of making his 12th payment, Enrique is paying the remaining balance on loan.
Position within private label personal care industry : How would you describe HPL and its position within the private label personal care industry?
What is the z-score-confidence interval : What is the z-score they will need for their confidence interval?
How do company use social media marketing : How do company use social media marketing?
Calculating the null and alternative hypotheses : First state your null and alternative hypotheses and the proceed with the following questions.
Prepare a training module for a project management office : Prepare a training module for a Project Management Office that covers key areas of professional responsibility for project managers.
Research hypothesis by describing the variables : (1) Provide the goal of the study and clearly state the research hypothesis by describing the variables.

Reviews

Write a Review

Business Economics Questions & Answers

  Calculate the nominal interest rate

Suppose the fisher hypothesis holds for an economy that has an expected real interest rate of 2 percent. For each of the expected inflation rates of 0,2,4,6, and 8 percent, calculate the nominal interest rate and the after tax expected real intere..

  What are other factors that can affect the price of a house

Regression with Logs. Using data from 1981 for houses sold in North Andover, Massachusetts, the model that relates housing price (measured in thousands of dollars) to the distance from a recently built garbage incinerator (measured in miles) was esti..

  Calculate consumer surplus at the market equilibrium

The market for a case of wine has been described by the following supply and demand functions: At the market equilibrium price, what would be the total monthly revenue? Calculate consumer surplus at the market equilibrium and indicate this surplus as..

  How are savers and borrowers brought together

people who want to borrow to finance their investment spending. How are savers and borrowers brought together.

  Cross price elasticity of three transportation modes

Assume that the train ticket price is $100 and 1000 passengers use train per day. 2000 passengers use buses and 5000 passengers use their own car. What can you say about the elasticity and cross price elasticity of these three transportation modes? W..

  Most accurate statement

Which of the following is the most accurate statement? Americans are very willing to buy domestically produced goods, even if there are more expensive than imported goods. We import more foreign goods than we did 40 years ago, but the merchandise imp..

  Compare benefits and costs of two alternatives for dealing

Compare the benefits and costs of two alternatives for dealing with the fear that imports of a key product could be cut off. The first alternative is blocking imports of that product now, so as not to become dependent on it. The second alternative is..

  What does your anticipated adjustment process imply

what does your anticipated adjustment process imply about the CR for the industry. industry B has 20 firms and the concentration ratio is 85%

  Explain by using graphs welfare off policy measures

Explain also by using graphs welfare off policy measures on consumer and producer surplus and net gain or loss to society.

  How much can you withdraw each month from your account

When you retire, you will combine your money into an account with a 9 percent return. How much can you withdraw each month from your account assuming a 25-year withdrawal period.

  Lifecycle models base on assumption that households

Lifecycle models base on the assumption that households want to maximize their consumption and at the same time insure themselves against income shocks. Are there other arguments that can reconcile the empirical observation of consumption dispersion ..

  Change in change in demand or change in quantity demanded

Using diagrams show what changes in price and quantity would be expected in the following markets under the scenarios given. Also say whether this represents a change in change in demand or change in quantity demanded.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd