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 five percentage points? Complete parts (a) through (c) below. a) Assume that nothing is known about the percentage of computers with new operating systems. n3 (Round up to the nearest integer.)

Q: The International Brotherhood of Slide Whistlers wants to conduct a survey to find what proportion…

A: Let COnfidence interval be 90% Zc=1.645 E=3%=0.03 p=0.5 n=?

Q: Nationally, 83% of Americans have earned a high school diploma.  We want to see if the proportion of…

A: We have to find sample proportion.

Q: During the first 13 weeks of the television season, the Saturday evening 8:00 p.m. to9:00 p.m.…

A: The hypotheses of the test are as follows: H0: The proportions of the viewing audience has not…

Q: From the sample statistics, find the value of p1 - p2, the point estimate of the difference of the…

A:

Q: A political scientist is interested in the effect of government type on economic development. She…

A: Observational Stratified study should she use to ensure that countries are selected from each region…

Q: 4. You plan to develop a new software system that you believe will surpass the success of Google and…

A: Given that -You plan to develop a new software system that you believe will surpass the success of…

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

A: Formula for the sample size needed to estimate a population proportion is

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

A: Answer:

Q: A research report from an independent-measures study states that there are significant differences…

A: It is given that the numerator (treatments) degrees of freedom is 2 and the denominator (error)…

Q: The Arizona Department of Transportation wishes to survey state residents to determine what…

A:

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

A:

Q: A survey question for a sample of 150 individuals yielded 75 Yes responses, 55 Noresponses, and 20…

A: The point estimate of the proportion of character A in the population is (No of individuals having…

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: o compare the effect of weather on sales of soft drinks, a soda manufacturer sampled two regions of…

A: Introduction: Two sample proportion test: The two sample proportion test is used to compare the…

Q: On a certain civil service examination, the grades of five people were 71, 73, 74, 86, and 96.…

A: The mean is the average of all the values or it is the sum of all the values divided by the number…

Q: Caitlyn has to determine how many of the 120 employees in her work place has comprehensive car…

A: i. Since caitlyn is interested in proportion of her coworker have comprehensive car insurance since…

Q: The bookstore at IRSC would like to estimate the proportion of students who prefer electronic…

A: Solution

Q: Consider a survey involving the cookie preferences of a sample of 1,214 adults. If 9% answered…

A: Consider the given information. A fraction can be converted into percentage by multiplying 100 and…

Q: A research report from an independent-measures study states that there are significant differences…

A: From the provided data we have, Degrees of freedom between group = k-1 = 2  Thus, k = 3 Degrees of…

Q: requires

A:

Q: 1.How many respondents should be chosen from Luzon? A. 125 B. 150 C. 175 D. 200 2. What type of…

A: Given that, a sample of respondents who own a Laundry Business from Luzon, Visayas, and Mindanao.…

Q: In 2007 the New York Times reported that the median annual household income in the UnitedStates was…

A: Note: Hey, since multiple sub parts are posted, we will answer first three sub parts according to…

Q: The Arizona Department of Transportation wishes to survey state residents to determine what…

A: Solution-: Given: M.E.=0.03,α=0.01, We take, p^=0.5 and  q^=0.5  We find how many residents do they…

Q: The 137 horses in a study on enteroliths, a type of stone in the gut, were housed either in a small…

A: The bar chart of count corresponding to large paddock, small paddock, stall or a grass pasture is…

Q: b) Caitlyn has to determine how many of the 120 employees in her work place has comprehensive car…

A: We have given a sample selection method by caitlyn we have to answer related questions.

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: The following table represents the survey conducted in a school.   Male female Chicken fried steak…

A:

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: 4. Ms. Ellis expected 50 families to attend parent-teacher conferences, but 60 families attended.…

A: To calculate the percentage error

Q: Caitlyn has to determine how many of the 120 employees in her work place has comprehensive car…

A: i) Since caitlyn is interested in proportion of her coworker have comprehensive car insurance…

Q: During the first 13weeks of the television season, the Saturday evening 8:00 p.m. to 9:00 p.m.…

A: To test whether the collected sample comes from the specific population or not, the chi-square…

Q: 4. You plan to develop a new software system that you believe will surpass the success of Google and…

A: The given margin of error (ME)  of 1% for obtaining the interval for the proportion of computers,…

Q: The Arizona Department of Transportation wishes to survey state residents to determine what…

A: Suppose p̂ is the sample proportion of the population, who would like to increase state-wide…

Q: The director of library services at a college did a survey of types of books (by subject) in the…

A: (a) The claim is that the subject distribution of books in the library fits the distribution of…

Q: A sample of 277 adults is selected. The adults are classified according to voter registration status…

A: For the given table find Relative frequency of registered to vote and prefer radio

Q: As part of a sixth-grade class project the teacher brings to class a large jar containing 200…

A: Given, Population size = 200 Sample size = 25 Red gumballs = 15 Green gumballs = 10

Q: 1)Caitlyn has to determine how many of the 120 employees in her work place has comprehensive car…

A: Introduction -  Sampling - Sampling is a process used in statistical analysis in which a…

Q: A recent study attempted to estimate the proportion of Florida residents who were willing to spend…

A:

Q: Suppose 420 randomly selected people are surveyed to determine whether or not they subscribe to…

A: Given that, 420 randomly selected people are surveyed to determine whether or not they subscribe to…

Q: Out of 200 people sampled, 28 said they prefer Coke over Pepsi. What is the point estimate for the…

A: From the given information, ˆp =0.14 Sample size is n=200

Q: 5. A study attempted to estimate the proportion of Florida residents who were willing to spend more…

A: Population: Population consists of the complete subjects that are included in the study for making…

Q: 1. What percentage of the employees originated from within the organization? 2. What percentage of…

A: Note: AS PER POLICY I HAVE CALCULATED 3 SUBPART PLZ REPOST FOR REMAINING  Here given table for…

Q: City planners plan to survey residents to estimate the proportion of city residents who use public…

A: Voluntary response sample: A sample in which the respondents participate by themselves is called a…

Q: Thirty two percent of all americans drink bottled water more than once a week (national resources…

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…

Q: In 2007 the New York Times reported that the median annual household income in the UnitedStates was…

A:

Q: The registrar’s office at ACC predicts that 90% of the 6,950 spaces open in various math classes…

A:

Q: Suppose the marketing company did a survey. They randomly surveyed 159 households and found that in…

A: Given Data Sample Size, n = 159 Number of successes, x = 109.0 Significance level,…

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: la survey, 200 shoppers were asked whether they have access to a computer at home and if they have a…

A:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.