The Longmont Computer Leasing Company wishes to estimate the mean number of pages that will be printed in a month on its leased printers. The plan is to select a random sample of printers and record the number on each printer's counter at the beginning of May. Then, at the end of May, the number on the counter will be recorded again and the difference will be the number of copies on that printer for the month. The company wants the estimate to be within ±140 pages of the true mean with a 98% confidence level. Complete parts a and b below. a. The standard deviation in pages printed is thought to be about 1,100 pages. How many printers should be sampled? How many many printers should be sampled? b.Suppose the standard deviation is off+- by 10%. What percentage change in the required sample size would this produce?
The Longmont Computer Leasing Company wishes to estimate the mean number of pages that will be printed in a month on its leased printers. The plan is to select a random sample of printers and record the number on each printer's counter at the beginning of May. Then, at the end of May, the number on the counter will be recorded again and the difference will be the number of copies on that printer for the month. The company wants the estimate to be within ±140 pages of the true mean with a 98% confidence level. Complete parts a and b below. a. The standard deviation in pages printed is thought to be about 1,100 pages. How many printers should be sampled? How many many printers should be sampled? b.Suppose the standard deviation is off+- by 10%. What percentage change in the required sample size would this produce?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 31PPS
Related questions
Question
The Longmont Computer Leasing Company wishes to estimate the mean number of pages that will be printed in a month on its leased printers. The plan is to select a random sample of printers and record the number on each printer's counter at the beginning of May. Then, at the end of May, the number on the counter will be recorded again and the difference will be the number of copies on that printer for the month. The company wants the estimate to be within ±140 pages of the true mean with a 98%
confidence level. Complete parts a and b below.
confidence level. Complete parts a and b below.
a. The standard deviation in pages printed is thought to be about
1,100 pages. How many printers should be sampled?
How many many printers should be sampled?
b.Suppose the standard deviation is off+- by 10%. What percentage change in the requiredsample size would this produce?
b.Suppose the standard deviation is off+- by 10%. What percentage change in the required
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.Recommended textbooks for you
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill