A programmer plans to develop a new software system. In planning for the operating system that he will use, he needs to estimate the percentage of computers that use a new operating system. How many computers must be surveyed in order to be 99% confident that his estimate is in error by no more than three percentage points? Complete parts (a) through (c) below. a) Assume that nothing is known about the percentage of computers with new operating systems. (Round up to the nearest integer.)

Q: A programmer plans to develop a new software system. In planning for the operating system that he…

A:

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A: a) From the given information,   Margin error = 0.025 Assume Sample proportion = 0.5   Critical…

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A: a Given that the margin of error is 0.035. Confidence level is 99%. And Significance level is 1% The…

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A:

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A: By using the standard normal table, the critical value zα2 at the 99% confidence level is, 2.576.…

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A: Given that  Margin of error = E = 4.5% = 0.045 90% confident  Level of significance = 10% = 0.10

Q: A programmer is planning to develop a new sohasem system in planning the operating system he will…

A: a)Given data, E=3% =0.03 Let p=0.50 z-value at 99% confidence is Zc=2.576 n=?

Q: (ii) How many appendectomies lasted at least two and a half hours? (iii) How many appendectomies…

A: Minutes freq(f) rlt freq(f/n) Cumulative freq Percentage Cumulative freq 110 - 120 2 0.08 2 8…

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A: Given Information:Margin of error, E=1.5%=0.015Confidence level, c=95%=0.95

Q: Readers of the magazine Popular Science were asked to phone in (on a 900 number) their responses to…

A: Answer:

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A:

Q: A programmer plans to develop a new software system. In planning for the operating system that he…

A: Solution: B. From the given information, confidence level is 0.99, p=0.92 and E=0.02.

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A: Margin of error (E) = 4.5% = 0.045Significance level (α) = 1 - 0.90 = 0.10

Q: A programmer plans to develop a new software system. In planning for the operating system that he…

A: The margin of error (E) is 0.04 and the confidence level is 0.90.

Q: se Brianna's sample to estimate the number of red gumballs in the jar.

A: Given that  Class jar containing 200 gumballs of two different colors  (Red and green) Brianna draws…

Q: In October 2017, the Gallup Poll asked a sample of 10281028 U.S. adults, "Are you in favor of the…

A: Given, n=1028 Consider that the population standard deviation is σ, the level of significance is α.…

Q: The school librarian wants to determine how many students use the library on a regular basis.  What…

A: Here we want to know sampling type.

Q: A programmer plans to develop a new software system. In planning for the operating system that he…

A: Sample Size: The formula for the sample size is as follows: Here, zα/2 is the critical value at 99%…

Q: What is the purpose of selecting the survey targets randomly?

A: Sampling is the process by which inference is made to the whole population by examining a part. The…

Q: You are the operations manager for an airine and you are considering a higher fare level for…

A: It is given that margin of error (E) is 0.015 and the confidence level is 0.90.

Q: If N is the size of the population and n is the size of the sample, find the sampling fraction?

A: From the provided information, The population size is N and the sample size is n.

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A: a)

Q: Assume that you want to be 95% confident that the sample percentage is within 3.5 percentage points…

A: Given that  Confidence level (C) = 95% The sample percentage is within 3.5 percentage points. Margin…

Q: For a science fair project, Barbara is trying to estimate the population of armadillidiidae bugs…

A: Given, Barbara traps 180 roly polies, marks them, and release them.  She then replaces the traps and…

Q: ou are the operations manager for an airline and you are considering a higher fare level for…

A:

Q: West High wants to estimate the number of seniors who plan to go to a  4 -year college. Answer the…

A: a) The correct answer is "50 seniors are randomly selected; 39 plan to go to a 4-year college. Since…

Q: 7) A researcher at a major hospital wishes to estimate the proportion of the adult population of the…

A: Given that, Critical value: Using the z-table, the critical value at 99% confidence level is

Q: A pollster wishes to estimate the proportion of United States voters who favor capital punishment.…

A: Given, 1 - α = 0.98ME =margin of error = 3% = 0.03To find the sample size is needed?

Q: An environmentalist wants to find out the fraction of oil tankers that have spills each month. Part…

A: Solution: a. Let X be the number of oil tankers that had spills and n be the number of tankers. From…

Q: Can you think of an area where it might not be practical, for a variety of reasons, to sample 100%…

A: Yes, there are several areas where we cannot sample 100% of the population being covered to test.

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A: Given,margin of error(E)=0.035 α=1-0.90=0.1α2=0.05z0.05=1.645

Q: What is the five-number summary?

A: Here minimum value is 2 and maximum value is 11. The cumulative frequency will be obtained as given…

Q: You are the operations manager for an airine and you are considering a higher fare level for…

A: Given that the confidence level is 90% and the margin of error is 1.5%. From the standard normal…

Q: If there are 11 data points in a set of data, what is the number of degrees of freedom? (Enter an…

A: We have to find out degree of freedom..

Q: If there are 41 data points in a set of data, what is the number of degrees of freedom? (Enter an…

A:

Q: a. What percentage of Illinois Math SAT takers seored 600 or more? b What percentage of Illinois…

A: Solution: Given: Population mean = μ = 556 Standard deviation = σ = 100 a) We have to find…

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A:

Q: Given the above population, what is the P(Female|Bachelor's OR more in educational attainment)?…

A: Introduction: Suppose A and B are two events, with respective probabilities P (A) and P (B). Denote…

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A:

Q: Suppose the marketing company did a survey. They randomly surveyed 145 households and found that in…

A: Proportion is almost similar to the concept of probability. Proportion is a fraction of a population…

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A:

Q: Supposed that in the past, 10% of women in the Philippines have severe dysmenorrhea. Do we have…

A: Followings are the answer of the questions The following information is provided: The sample size is…

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A: Given that  Margin of error =E =5.5%=0.055 90% confidence.

Q: A box truck rental service offers trucks in multiple sizes for people who are moving. If a 10-foot…

A: We have, a box truck rental service offers trucks in multiple sizes for people who are moving such…

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A:

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A: Find z-critical value:…

Q: Anews service conducted a survey of 1049 adults ages 18 years or older in a certain country. August…

A: Given, The results of a survey, On the basis of the results, we need to say the research objective,…

Q: A school principal claims that the numeracy rate of the senior high school students in his school is…

A: Given p=0.6, pcap=200/500=0.4, n=500, alpha=0.05 1. H0:p=0.60 vs H1:p!=0.60 2) alpha=0.05 3) Test…

Q: A programmer is planning to develop a new sohasem system in planning the operating system he will…

A: Given data: Confidence level = 99% Margin of error = 3 % = 0.03 To find the  required sample size.

Q: You are the operations manager for an airline and you are considering a higher fare level for…

A: Answer can be given from sample size formulae.