What is the margin of error

Assignment Help Basic Statistics
Reference no: EM131910650

A researcher is interested in estimating the average salaries of police officers in a large city. She wants to be 95% confident that her estimate is correct. If the standard deviation is $1050, how large a sample is needed to get the desired information and to be accurate within $200

For the confidence interval (5.15, 8.15) what is the margin of error?

Reference no: EM131910650

Questions Cloud

Discuss the causes of the second world war : Discuss the Causes of the second world war. The role of the Nazis in the second world war. Expound on the holocaust in Germany.
Regression equation for the depression screening : If the regression equation for the depression screening example was Y=0.40 + 10(X), then a score of 20 on the screening test
What can you learn from the films genre : What do the critics and scholars say? What is the production history of the film? Who made the film? What can you learn from the film's genre?
Calculate equivalent pre-split dividend : Find the Equity Retained - Evaluate Earnings Remaining and Calculate Dividend Payout Ratio - Calculate Equivalent Pre-Split Dividend
What is the margin of error : For the confidence interval (5.15, 8.15) what is the margin of error?
Discuss in detail the strengths and limitations of analysis : GSB014 Business Decision Making and Analysis Assessment Task: Case Study. Discuss in detail the strengths and limitations of your analysis
Maximum mortgage loan property will support : Investor-owned office buildings. the maximum mortgage loan the property will support is.
Average number of unoccupied seats per flight : A large airline wants to estimate its average number of unoccupied seats per flight over the past year. To accomplish this, the records of 30 flights
How or where do odysseus men injure the cyclops : How or where do Odysseus' men injure the Cyclops? Why didn't they just stab him in the heart? How does this connect with the way they escape the cave?

Reviews

Write a Review

Basic Statistics Questions & Answers

  A new grug had a potency advertised at 75 given the

a new grug had a potency advertised at 75. given the following smaple datan25x bar 76.6s1a check manufacturers claim

  Conditional probability relationship

As a part of your proposals. you need to submit demographic information to help demonstrate that the location chosen by the management teams will be a good investment.

  To find the z score for given value of x

A random variable X is normally distributed with mu = 60 and standard XXX = 11. What is zscore for X = 71

  Calculating how long customer waiting time will in seconds

Using a single-server queuing system with Poisson arrivals of 10 units per hour and a constant service time of 2 minutes per unit. How do I go about calculating how long the customer waiting time will be in seconds, on average?

  Measuring the thickness of tread

A machine manufactures tires with a tread thickness that is normally distributed with mean 10 millimeters (mm) and standard deviation 2 mm.

  Find sufficient evidence to reject the null hypothesis

If the average importance were computed for each group, would you expect the sample means to be similar or different? What was the total sample size in this study?

  Explain the statistical notation for each proportion

Explain whether p^ or p is the correct statistical notation for each proportion described: The proportion that is left-handed in a sample of n = 250 individual.

  Probability of injured by lightning over average lifetime

According to Krantz, the probability of being injured by lightning over the average lifetime is 19100. Show how that probability should relate to your answer.

  What percentage had coronary heart disease

Construct a contingency table for the relationship between degree of anger and the incidence of heart disease.- Among those with no anger symptoms, what percentage had coronary heart disease?

  Evaluate how well the authors used anova in the study

Search the Internet. Search the Internet or your library to find a study that is interesting to you and that used one-way ANOVA to analyze the data.

  Desired age for retirement and current age

If we find a correlation of +.50 between desired age for retirement and current age, how much of the variance in desired age of retirement is predicted from current age. How much variance is left unexplained?

  Test that has a mean

If I obtain a score of 100 on a test that has a mean of 120 and a standard deviation of 10, what is my standard score?

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