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 four percentage points? Complete parts (a) through (c) below. a) Assume that nothing is known about the percentage of computers with new operating systems. n= 1037 (Round up to the nearest integer.) b) Assume that a recent survey suggests that about 96% of computers use a new operating system. (Round up to the nearest integer.)

Q: For an opinion on bicycle racks, which segments of the school population would you sample? o…

A: For an opinion on bicycle racks, which segments of the school population would you sample?

Q: Which survey question is biased? O a) Does the media impact politics? O b) Is eating fruit good for…

A: A leading question prompts the respondent to answer in a particular way. Leading questions are…

Q: How does the cost of shipping a standard-sized crate relate to the distance of the destination? Can…

A: distance charges 14 1400 23 2000 9 800 17 1600 10 1620 22 1900 5 620 12 1440 6 900…

Q: What fraction of survey respondents identified themselves as Republicans? What fraction of survey…

A: As per our guidelines, we are allowed to answer first three sub-parts only. Thanks Given :

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: urvey asked a group of adults and youths if they prefer reading books printed o per or electronic…

A:

Q: When 3,011 adults were surveyed in a Pew Research Center poll, 73% said that they use the internet.…

A: Given Information: n = 3011 ¾ of all adults use the internet (p)  = 75% = 0.75   = 73% = 0.73 Step…

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: Linda Silbers is a social scientist studying voter opinion about a city bond proposal for a…

A: Given that the confidence level is 95%. margin of error (ME)=5%=0.05 Consider that the p=73%=0.73…

Q: The state transportation commission counted cars traveling east and west across a toll bridge. The…

A:

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: 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: 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: Martha Quinn is interested in the proportion of fast to slow songs she will play today.  She takes…

A: In this method of selection, each song have equal probability of getting selected and the selection…

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: Find the number of respondents needed in a poll to determine, within 1.5% margin of error, the…

A: The answer is attached below,

Q: requires

A:

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

A:

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

A:

Q: a. How many degrees of freedom are there in determining the among-group variation? b. How many…

A: here given there are 8 group with four values in each  c= 8 so here n = 8 * 4 = 32

Q: Solve for the sample size: A programmer plans to develop a new software system. In planning for the…

A: Given that: Confidence level = 90% Margin of error, E=0.02

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 0.03 and the confidence level is 0.95.

Q: What percentage of students guessed between 41 and 44

A:

Q: What proportion of Canadians spend between 8 and 16 hours watching Netflix per month? What…

A: Solution

Q: c)   If the scientists want to estimate the proportion of deer that carry Lyme disease ticks to…

A: We have given that,  Margin of error (E) = 0.02 and confidence level = 90% Then,  We will find the…

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: 19 2. How can you tell whether a greater percent of customers surveyed selected veggie burger or…

A:

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

A: Critical value: Here, α = 0.01. Using excel formula “=NORM.S.INV(1-(0.01/2))”, the critical value is…

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

A: To calculate the percentage error

Q: You want to estimate the proportion of home accident deaths that are caused by falls. How many home…

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

Q: A. What is the sex ratio of male to female regular alcoholic beverage drinkers? B. What proportion…

A: The given data is,   All persons 18 years of age and older Current regular alcoholic beverage…

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: 81 students at a college were asked whether they had completed their required English 101 course,…

A: The number of students said yes (x) is 54 and the sample size (n) is 81.

Q: If 31 out of 50 students sampled live in a college dormitory, what is the estimated proportion of…

A:

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

A:

Q: Consider a survey involving the cookie preferences of a sample of 1,214 adults. If 3% answered…

A: Given percentage is 3%.   To find decimal of the percentage : divide percentage by 100.…

Q: a. How many treatment conditions were compared in the study? b. What was the total number of…

A: Here it is given that, a research report from an independent-measures study states that there are…

Q: a survey showing the popularity of the current governor gives an approval rating between 42% and…

A:

Q: 2 Considering the 5800 enrollees in the College of Education, a researcher would like to make a…

A:

Q: A video game company sold 828 white game consoles and 670 black consoles. About how many consoles…

A: So here given sold consoles are white and black one. And simply we have to add both and find the…

Q: e. What is the highest personal messaging frequency among the bottom 20% of employees in terms of…

A: We have to find the values for normal distribution using CLT.

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: atherine Chão, Director of Marketing Research, needs a sample of households to participate in the…

A: Quota sampling is known as a method non-probability sampling. In this method, the available…

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: 4. A researcher is interested in the percentage of HIV positive teenagers in South Africa. The…

A: We have given that statement. Here, need to find out that the given statement is true or false.…

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

A:

Q: Does the Midwest, or Northeast, seem to have a higher percent of graduates taking the SAT? Midwest…

A:

Q: To determine the proportion of voters who favor a certain candidate for governor, the campaign staff…

A: