User Account

All Pages

Standard deviation of the population of times

Assignment Help Basic Statistics
Reference no: EM131910803

Question:The records of the 100 postal employees at a postal station in a large city showed that the average time these employees had worked for the postal service was = 9 years. Assume that we know that the standard deviation of the population of times U.S. postal service employees have spent with the postal service is approximately Normal, with standard deviation ? = 5 years. A 95% confidence interval for the mean time? the population of U.S. postal service employees have spent with the postal service is

  • 9 ± 0.82. Incorrect
  • 9 ± 0.98. Incorrect
  • 9 ± 9.80. Incorrect
  • Not trustworthy. (True Answer )Correct

If the answer is the last one" not trustworthy", please explain in detail. Do not just tell me"the conditions of this inference procedure have not been met." I want to know the conditions of this inference procedure have not been met because it's not the SRS or n<15 or...etc??Thank you

Reference no: EM131910803

Questions Cloud

How can you use accounting to manage your personal finances : While the focus in this course is the use of accounting within a business, the same concepts can be used on a personal level.
Describe the chosen organisation and industry : Critically evaluate the vision, mission and values statements of your chosen organisation and discuss their appropriateness.
What criteria are used in this financial report audit : PACC6002 Auditing and Assurance Services - Explain the difference between the auditors responsibility and management's responsibility for financia
What part of project requirements is critical to it project : Personally, what one part of the project requirements is critical to the success of an IT project? Please explain.
Standard deviation of the population of times : Question:The records of the 100 postal employees at a postal station in a large city showed that the average time these employees had worked
What percentage of your traffic relied on ip : Did any of your traffic use a type of frame that was not Ethernet? What percentage of your traffic relied on IP? How many of your packets used IPv6?
Analysis of the policies and approach to corporate social : Analysis of the policies and approach to Corporate Social Responsibility by the firm you have chosen in one geographic location.
Describe your personal and household financial goals : Briefly list any financial problems you face personally or as a household, such as too much debt not enough savings, or not enough income.
Find value of call option using binomial option pricing : Find the value of a call option using the binomial option pricing formula for single period when given the following information:

Reviews

Write a Review

Basic Statistics Questions & Answers

  Calculate probability the entire shipment will be returned

Dell Computers receives large shipments of microprocessors from Intel Corp. It must try to ensure the proportion of microprocessors that are defective is small.

  Calculate graduation rate for males who went to preschool

Find the graduation rate for males who went to preschool, and compare it with the graduation rate for males who did not go to preschool.

  Find the mean and variance of the number of games played

Two teams are going to play a best-of-7 match (the match will end as soon as either team has won 4 games). Each game ends in a win for one team and a loss.

  What is wrong with the given reasoning

Homes. Funding for many schools comes from taxes based on assessed values of local properties. People's homes are assessed higher if they have extra features.

  Problem regarding the control limit of p-chart

The mean fraction defective in the samples for these in the past has been 3%. If there are 5 random samples, and a constant sample size of 400 is taken for each random sample, what is the upper control limit of P-Chart?

  In a study on the health and development of a bird species

question in a study on the health and development of a bird species yellow robin two different sites were compared

  Give null and alternative hypotheses for comparing fits

Interpret the R2 values for the models.- Give the null and alternative hypotheses for comparing the fits of Models 1 and 2.-  Are the two models nested? Explain.

  Consider the following simple model for daily changes in

consider the following simple model for daily changes in the price of a stock. suppose that on each day the price

  Draw a separate well-labeled normal curve for each part

Inverse Normal, Standard Assume a standard Normal distribution. Draw a separate, well-labeled Normal curve for each part.

  Statistical literacy and critical thinking

Does that indicate that changes in the concentration of carbon dioxide cause changes in the global temperature? Why or why not?

  Shape for a column subjected to an axial compressive load

Select the lightest W14 shape for a column subjected to an axial compressive load of 360 kips. The unbraced length of the column is 24 ft.

  Summarize the center and spread in the given data

Pizza prices. The histogram shows the distribution of the prices of a small, plain pizza (in $) for 156 weeks in Dallas, Texas.

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