The average improvement in time for the population

Assignment Help Applied Statistics
Reference no: EM13336845

In an attempt to determine whether or not special training increases the speed with which assembly line workers can do an assembly job at AMTEL Inc., 25 workers are timed performing the task. Then, they are given a special training course designed to increases their assembly efficiency. At the end of the course, they are timed doing the same task. The differences between the first and the second time are recorded for each of the 25 assembly line workers. The mean improvement for the 25 workers was found to be 2.6 minutes and the sample standard deviation was 4 minutes.

Let variable X represents the improvement in time for each assembly line worker. Let μ represents the average improvement in time for the population. Has the training improved the time required on the job? Please test the hypothesis use α=0.05 as the level of significance

Reference no: EM13336845

Reviews

Write a Review

 

Applied Statistics Questions & Answers

  Is there a significant correlation

What test or tests would you use to rule out chance from causing the apparent differences in these data and is there a significant correlation?

  Information and the research study

Please read through the case scenario shown below to gain an understanding of the background information and the research study

  Binomial probability distribution

Binomial probability distribution

  Statistic project

Identify sample, population, sampling frame (if applicable), and response rate (if applicable). Describe sampling technique (if applicable) or experimental design

  Which country should import bed linens

Suppose South Korea can produce 100 computer chips with 10 hours of labor input and 50 bed linens with 6 hours of labor input. The US can produce 100 computer chips with 8 hours of labor input and 50 bed linens with 4 hours of labor input.

  What is the probability that a debt for borrower with good

What is the probability that a debt for borrower with good credit is less than $10,000?

  Calculate mortgage rates and production lot size

Calculate mortgage rates, production lot size, forecast the demand for the products, track epidemics and their spread, help solve crimes, even help estimate tax revenues.

  Which data set has the lowest standard deviation

Create the second data set by inserting eight data points all very close to 10 on the number line and record the standard deviation of this data set, and then delete that data set.

  Create a separate histogram for each day

Festival Histogram: Beginning with in the text on spotting outliers, correct the type in the data as directed - create a separate histogram for each day, Day1, Day2, and Day3, using the hygiene variable for all three days. Include the normal curve

  Develop a second decision tree for sonny

Develop a second decision tree for Sonny and his team to reflect this new option of hiring the research firm prior to the possibility of developing the app

  Design can yield relatively unambiguous findings

State a research question for which a single-group post-test only design can yield relatively unambiguous findings.

  Research methodologies and techniques

Identify a business research topic, define the research questions for the identified problem or opportunity and select the appropriate research methodologies and techniques to use for the research project

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