User Account

All Pages

Confidence interval estimate of the population mean

Assignment Help Basic Statistics
Reference no: EM132849230

1. A population consists of the following four values: 8, 10, 12, and 16. From this population, there are six different samples of size 2. The means of the six samples of size 2 are 9, 10, 12, 11, 13, and 14.

Compute the mean of the distribution of the sample means and the population mean. What is true about the two values?

2. A population consists of 10 values. How many samples of size six are possible?

3. A university has 1,000 computers available for students to use. Each computer has a 250-gigabyte hard drive. The university wants to estimate the space occupied on the hard drives. A random sample of 100 computers showed a mean of 115 gigabytes used with a standard deviation of 20 gigabytes. What is the probability that a sample mean is between 111 and 119 gigabytes?

4. There are 250 computer programmers employed at Computers.com, Inc. A sample of 50 programmers revealed that 30 graduated with a four-year college degree. Construct the 95 percent confidence interval for the proportion of all programmers who graduated from a four-year university.

5. Sugar is packaged in 16-ounce bags. If 42 bags are sampled, with a mean of 15.95 ounces and a standard deviation of 0.4 ounces, what is the 99% confidence interval estimate of the population mean?

Reference no: EM132849230

Questions Cloud

Develop a personal development plan : MBA 530 Leading People and Organizations Assignment - Personal Development Plan, Southern New Hampshire University, USA
State the value of the sample slope : Computer output for fitting a simple linear model is given below. State the value of the sample slope for this model and give the null and alternative
MOD007667 Finance for Decision Making Assignment : MOD007667 Finance for Decision Making Assignment Help and Solution, Anglia Ruskin University - Assessment Writing Service
Is the below a strong inductive argument : Is the below a strong inductive Argument? Why or Why Not?
Confidence interval estimate of the population mean : A population consists of the following four values: 8, 10, 12, and 16. From this population, there are six different samples of size 2. The means
Deviation of the sampling distribution of the sample mean : For a sample of size , what can you say about the shape of the sampling distribution of the sample mean? State the mean and standard deviation of the sampling
What is the average yearly variation of the value of stocks : What is the average yearly variation (in percentage) of the value of the stocks from January 2011 to January 2021?
Describe two distributions that a researcher might encounter : Describe two distributions (other than normal) that a researcher might encounter in data and when.
What is the expected value of the extended warranty : What is the expected value of the extended warranty assuming it is replaced in the first 2 years? Answer to the nearest cent.

Reviews

Write a Review

Basic Statistics Questions & Answers

  The number of traffic accidents at a certain intersec-

the number of traffic accidents at a certain intersec- tion is thought to be well modeled by a poisson process with a

  A reporter wants to know whether the difference between the

a market research company interviews a simple random sample of 3600 persons in a certain town and asks what they did

  The weight of each client at a weight -loss clinic is

the weight of each client at a weight -loss clinic is measured. the variable is a cannot determine b

  Working on an implementation for the company

You are the project manager of a team of twelve people working on an implementation for the company.

  Find sample size necessary to estimate a population mean

Determine the sample size necessary to estimate a population mean to within 1 with a 90% confidence given that the population standard deviation is 10.

  Overemphasis on short-term profits

Evaluate the following statement: managers should not focus on the current stock value because doing so will lead to an overemphasis on short-term profits

  Two areas of human resource management

This assessment will allow you the opportunity to choose two areas of Human Resource Management that you are interested in, and conduct an in-depth analysis to address specific components within each area.

  Find mean amount spent per person per month by shoppers

Assume that this city has 1100 shoppers aged 12 to 14 years and 900 shoppers aged 15 to 17 years. Find the mean amount spent per person per month by shoppers aged 12 to 17 years in this city.

  Select a quantitative article specific

Search for and select a quantitative article specific to your discipline and related to t-tests; my discipline is education. Can you find an article about childhood obesity or bullying.

  Performance on the spatial skills task

For the following data, determine whether or not right-hemisphere damage results in significantly reduced performance on the spatial skills task. Test with alpha set at .05 with one tail. The data are as follows:

  Use the spss output to determine

Use the SPSS output to determine if there is sufficient evidence to conclude that Sally bakes a better pie than Pat (i.e., the average rating for Sally at her church is higher than the average rating for Pat at her church).

  Estimate for differncein mean bmi between boys and girls

Girls are needed to ensure that a 95% confidence interval estimate for the differncein mean BMI between boys and girls has a margin of error not exceeding 2 units?

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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