Determine width for ninenty-nine percent confidence interval

Assignment Help Basic Statistics
Reference no: EM1393005

An economist is interested in studying the spending habits of consumers in a particular region. The population variance is known to be $1,000,000. A random sample of 50 individuals resulted in an average expense of $15,000. What is the width of the 99% confidence interval?

Reference no: EM1393005

Questions Cloud

Explain how risk has impacted a project : Explain how risk has impacted a project that you have been associated with as a team member or project leader
Explain price be put on good given by world-s ecosystems : "Must the Price Be Put on Goods and Services given by World's Ecosystems". Read pro and con arguments, do your own study on web, and then present completely supported.
Find the angular momentum of disk : What are the following values about the central axis at the instant the torque has been applied for 195ms? The angular momentum of disk.
Basic descriptive statistics : The formula for the ratio is the mileage that 14 students drive to work out of 20 students. Compute the central tendency (mean, median, mode) and dispersion (range, variance, standard deviation).
Determine width for ninenty-nine percent confidence interval : An economist is interested in studying the spending habits of consumers in a particular region. The population variance is known to be $1,000,000. A random sample of 50 individuals resulted in an average expense of $15,000. What is the width of th..
Find out the magnitude of the acceleration of particle : An 8.00 point mass and a 15 point mass are held in place 50 apart. A particle of mass is released from a point between the two masses 13.00 from the 8 mass along the line connecting the two fixed masses.
Discussion on hela cells : Define HeLa cells and where did they come from? Using specific examples, discuss how these cells have contributed to the advancement of our understanding of human biology.
Information about statistical analysis : Please give an example on higher wages vs. education level using a sample population of 30 men and women. Compute the measures of central tendency, dispersion, and skew for your data
Explain what was the bullet flight time : A 4.20kg steel ball strikes a wall with a speed of 7 m/s at an angle of 60° with the surface. It bounces off with the similar speed and angle. If the ball is in contact with the wall for 0.20 s, what is the average force exerted by the wall on bal..

Reviews

Write a Review

Basic Statistics Questions & Answers

  The results are displayed in the graph

High levels of glucose in the blood are indications of diabetes, which is becoming more prevalent in the United States. Diabetes can lead to many complications such as blindness and heart disease. A random sample of 180 individuals had their blood su..

  Multiple choice questions-type one and type one error

For the following hypothesis test where H 0 :  m   £10 vs. H a :  m   >10, we reject H 0  at level of significance  a  and conclude that the true mean is greater than 10 when the true mean is really 8.

  Keeping weight down associated with smoking status

Test the whether the attitude toward keeping weight down associated with smoking status.

  Calculating the probability values

What is the probability that all tree students pick a different card?

  Valid probability distribution

Find the value of k that makes f(x; y) a valid probability distribution.

  Probability for amount requested

What is the probability that: The amount requested is $80,000 or more?

  Continuous random variable

X is a continuous random variable uniformly distributed on [20, 45] that is, the end points c = 20 and d = 45.

  Finding null hypothesis against alternative that is higher

Test at 5% significance level null hypothesis that population mean is 40 hours against alternative that it is higher.

  Retirement and residential area using chi square test

Test whether the relationship between the plan at retirement and residential area using Chi square test.

  Prediction interval based on multiple-regression equation

Construct a 98% prediction interval for the selling price of a 4l- year old house having 4500 square feet, 13 rooms, and an attached garage.

  Relationship between age group using level of significance

At 0.05 level of significance, is there evidence of significant relationship between age group and where people mainly get their news? If so, describe the relationship.

  Correlation in the population

A random sample of 15 paired observations has a correlation of -.46. Can we conclude that the correlation in the population is less than zero? Use the .05 significance level.

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