1 a local environmental agency has selected a simple random, Ask an Expert

Others

1. A local environmental agency has selected a simple random sample of 16 homes to be tested for tap-water lead. Concentrations of lead were found to have a mean of 12 parts per billion and a standard deviation of 4 parts per billion. Considering that the homes were selected from a community in which there are 100 homes, construct and interpret the 95% confidence interval for the population mean. Based on your results, comment on the possibility that the average lead concentration in this community's homes might exceed the Environmental Protection Agency's recommended limit of 15 parts per billion of lead.

2. A simple random sample is to be drawn from a population of 800. In order to have 95% confidence that the sampling error in estimating 7T is no more than 0.03, what sample size will be necessary?

View complete question

Homework Help/Study Tips, Others

Category:- Homework Help/Study Tips
Reference No.:- M91672365

Have any Question?Write your Review or question?

Related Questions in Homework Help/Study Tips

Identifying your learning patternsyou may view a written

Identifying Your Learning Patterns You may view a written transcriptDescription: Preview the document of this video or click the "CC" button on the video player above. Prepare: Before attempting this discussion, be sure ...

You have to write based on this slides as well as your own

You have to write based on this slides as well as your own understanding of the topic. Highlighted part should be done properly. Length: 2,500 words You have to discuss: Fair Work Commission's New Approaches program Coll ...

Instructions assume you are an intelligence analyst for the

Instructions: Assume you are an intelligence analyst for the Department of Homeland Security. Your supervisor believes changes in the U.S. intelligence community structure are needed. As a first step, prepare a fact shee ...

Question comment 1 there are many strategies that i can use

Question: Comment 1: There are many strategies that I can use to create change in my current workplace. One of them is to develop alliances and social support systems that can legitimize, nurture, and stimulate related c ...

Question 750 words or morecontinuing with the assumptions

Question: 750 words or more Continuing with the assumptions from the previous discussion, as the human resources training professional, you have trained hiring managers about the importance of some employment laws. After ...

Question religion and americans moral implicationsone of

Question: Religion and Americans : Moral Implications. One of the more common arguments I hear when discussing ethics, morals, and values is that in the United States we were founded on religious, primarily Christian, te ...

Question define and briefly discuss the following

Question: Define and briefly discuss the following brainstorming techniques, the delphi technique, brainstorming, or nominal group technique. Requirements (please read): For each discussion, you are required to write an ...

Question nbspwhat do you think of when you hear the term

Question : What do you think of when you hear the term "Communication Theory"? After reviewing the Week 1 materials, why do you think it is important to evaluate and study Communication Theory? After reading about the t ...

Assignmentintroductionprovide an overall description of the

Assignment Introduction:?Provide an overall description of the school and classroom, be specific.? Describe the demographics of the class?(numbers by race, gender, ESE, ESOL). Planning and Preparation:?How does the class ...

Question assume you were in charge of the risk management

Question: Assume you were in charge of the Risk Management functions at Notre Dame at the time of the accident that claimed Declan Sullivan's life. a) What five (5) things would you have required to take place in order t ...

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Homework Help/Study Tips Expert