Indicate that both processes yield the same mean level

Assignment Help Mathematics

Reference no: EM131031964

An article in Quality Engineering (Vol. 4, 1992, pp. 487-495) presents viscosity data from a batch chemical process. A sample of these data follows:
13.3 14.5 15.3 15.3 14.3 14.8 15.2 14.5 14.6 14.1
14.3 16.1 13.1 15.5 12.6 14.6 14.3 15.4 15.2 16.8
14.9 13.7 15.2 14.5 15.3 15.6 15.8 13.3 14.1 15.4
15.2 15.2 15.9 16.5 14.8 15.1 17.0 14.9 14.8 14.0
15.8 13.7 15.1 13.4 14.1 14.8 14.3 14.3 16.4 16.9
14.2 16.9 14.9 15.2 14.4 15.2 14.6 16.4 14.2 15.7
16.0 14.9 13.6 15.3 14.3 15.6 16.1 13.9 15.2 14.4
14.0 14.4 13.7 13.8 15.6 14.5 12.8 16.1 16.6 15.6

(a) Reading down and left to right, draw a time series plot of all the data and comment on any features of the data that are revealed by this plot.

(b) Consider the notion that the ?rst 40 observations were generated from a speci?c process, whereas the last 40 observations were generated from a different process. Does the plot indicate that the two processes generate similar results?

(c) Compute the sample mean and sample variance of the ?rst 40 observations; then compute these values for the second 40 observations. Do these quantities indicate that both processes yield the same mean level? The same variability? Explain.Copy and paste your question here...

Reference no: EM131031964

Questions Cloud

How the arp cache poisoning attack work : In this task, you need to demonstrate how the ARP cache poisoning attack work. Several commands can be useful in this task. In linux we can use command arp to check the current mapping between IP address and MAC

Develop a long-term professional relationship : In each case the client is attracted to the idea of working with a young architect / landscape architect / built environment professional, with whom they might develop a long-term professional relationship

Draw a single erd and identify primary and foreign keys : Draw a single ERD - clearly identify Primary and Foreign keys (state any assumptions made) and Create a view that would list all MIS required courses

Frederick mining had the following income and expense : Frederick Mining board of directors declares a $1.50-per-share dividend payable on 3/31/2016 to shareholders of record as of 3/15/2016. Frederick uses a dividends account to record dividends declared.

Indicate that both processes yield the same mean level : Reading down and left to right, draw a time series plot of all the data and comment on any features of the data that are revealed by this plot.

Why is health literacy particularly important to this group : Defines health literacy and explains its relationship to health outcomes; (body paragraph) Define health literacy and explain why is it important (eg what happens when people have low levels of health literacy, how common is low health literacy et..

Determining the center of gravity : The circular plate has a weight W and center of gravity at its center. If it is supported by three vertical cords tied to its edge, determine the largest distance d from the center to where any vertical force P can be applied so as not to cause th..

The trial balance of valdez fashion center : The trial balance of Valdez Fashion Center contained the following accounts at November 30, the end of the company’s fiscal year.

Calculate the standard deviation of the population : Assume that the dataset you have represents the whole population. Calculate the standard deviation of the population and use it to calculate the confidence interval for the population mean for the same random sample for 90%, 95% and 99% confidence..

User Account

All Pages