In a survey of 226 random college students, 20 reported being "only" children.a. What is the point estimate for the population proportion of only children?b. Verify the requirements for using this sample to make a CI to estimate thepopulation proportion of only children.Estimate the percentage of students nationwide who are only children, with95% confidence. Write your answer as a sentence.d. Does your interval refute(contradict) the claim that 10% of students are onlychildren? Explain briefly.How large is the margin of error?f. If we wanted to cut the margin of error to 1%, and keep the 95% confidencelevel, how large of a sample would we need? Assume no prior sample isavailable.C.

As per guidelines i have calculated 3 subparts plz repost for remaining parts , with note i need…

Answered: a. What is the point estimate for the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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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 95% confident that his estimate is in error by no more than three percentage points? Complete parts (a) through (c) below.Question content area bottomPart 1a) Assume that nothing is known about the percentage of computers with new operating systems. n=enter your response here (Round up to the nearest integer.)Part 2b) Assume that a recent survey suggests that about 96% of computers use a new operating system.n=enter your response here (Round up to the nearest integer.)Part 3c) Does the additional survey information from part (b) have much of an effect on the sample size that is required?A.Yes, using the additional survey information from part (b) dramatically reduces the sample size.B.Yes, using the additional survey information…
You are doing a research project in political science to determine the proportion of voters in your district who favor capital punishment. a. If no preliminary sample of voters is taken to estimate p, how large a sample is necessary to be 99% sure that the point estimate will be within a distance of .01 from p? b. The NORC found that approximately 67% of people in the U.S. favor capital punishment. How large a sample is necessary to be 99% sure that the point estimate will be within a distance of .01 from p?
You will be applying what you have learned in this course by gathering data and running a statistical analysis. 1) To study about the relationship between height and the weight, you need to collect a sample of nine (9) people using a systematic sampling method. a. What is the population of people? b.Where and how are you going to collect your sample? c. Does your sample accurately represent your population? Why or why not? d. Collect the sample and record the data. 2) (CLO 1) Construct a confidence interval to estimate the mean height and the mean weight by completing the following: a. Find the sample mean and the sample standard deviation of the height. b. Find the sample mean and the sample standard deviation of the weight. c. Construct and interpret a confidence interval to estimate the mean height. d. Construct and interpret a confidence interval to estimate the mean weight. 3) (CLO 2) Test a claim that the mean height of people you know is not equal to 64 inches using the…
Researchers want to estimate the percentage of people who thought drinking and driving was a serious problem. Reserchers waited outside a bar to question people. They usually find 11%of bar patrons believe drinking and driving is a serious problem. a. identify the populatin of interest b. identify the sample c. identify the population parameter of interest d. identifywho if anyone was left out of the study
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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 90% confident that his estimate is in error by no more than five percentage points question marks? Complete parts (a) through (c) below. a) Assume that nothing is known about the percentage of computers with new operating systems.
You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you survey? Assume that you want to be 95% confident that the sample percentage is within 5.5 percentage points of the true population percentage. Complete parts (a) and (b) below. a. Assume that nothing is known about the percentage of passengers who prefer aisle seats. (Round up to the nearest integer.) b. Assume that a prior survey suggests that about 33% of air passengers prefer an aisle seat. n3= (Round up to the nearest integer.)
You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you survey? Assume that you want to be 90% confident that the sample percentage is within 5.5 percentage points of the true population percentage. Complete parts (a) and (b) below. a. Assume that nothing is known about the percentage of passengers who prefer aisle seats. (Round up to the nearest integer.) b. Assume that a prior survey suggests that about 38% of air passengers prefer an aisle seat. (Round up to the nearest integer.)
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. Question content area bottom Part 1 a) Assume that nothing is known about the percentage of computers with new operating systems. n=enter your response here (Round up to the nearest integer.) Part 2 b) Assume that a recent survey suggests that about 90% of computers use a new operating system. n=enter your response here (Round up to the nearest integer.) Part 3
A group project ivestigated the number of hours of TV viewed by students ona caollege campus. Two hundred students were surveyed via questionnaires. Identify the population?
the Seeb International School. The difference between estimates and population parameters is known as: O a. formula error O b. enumeration error O c. sampling error С. O d. human error Next page

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