You work for a marketing firm that has a large client in the automobile industry. You have been asked toestimate the proportion of households in Chicago that have two or more vehicles. You have been assignedto gather a random sample that could be used to estimate this proportion to within a 0.025 margin of errorat a 95% level of confidence.a) With no prior research, what sample size should you gather in order to obtain a 0.025 margin of error?Round your answer up to the nearest whole number.=householdsb) Your firm has decided that your plan is too expensive, and they wish to reduce the sample size required.You conduct a small preliminary sample, and you obtain a sample proportion of p = 0.185. Using this newsample size should you gather in order to obtain a 0.025 margin of error? Round yourinformation. whanswer up to the nearest whole number.households

From the provided information, Confidence level = 95% Margin of error = 0.025

Answered: You work for a marketing firm that has…

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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Past surveys showed that 44.2% of Filipino households have pets. A recent survey reported that 516 of the 1200 Filipino households have pets. Does this indicate that the proportion of Filipino households who have pets has decreased? Use a 5% level of significance. A. Perform a complete test of hypothesis. B. Select here the conclusion for this test of hypothesis. The proportion of Filipino households who have pets has decreased. There is no sufficient evidence to say that the proportion of Filipino households who have pets has decreased.
You wish to determine what percent of pre-kindergarten children ages 3 to 5 whose mother had a bachelor's degree or higher were enrolled in center-based early childhood care and education programs. How large of a sample is needed for an estimate with 90% confidence within 3% if you had no prior knowledge of the sample proportion?
A power analysis is a calculation used to estimate the smallest sample size needed for an experiment, given a required significance level, statistical power, and effect size. It helps to determine if a result from an experiment or survey is due to chance, or if it is genuine and significant. Think of an experiment or a survey that you have conducted or will conduct in your field of interest and use it to discuss the following questions: 1. Describe the importance of power analysis in an experiment. 2. How will you determine the appropriate significance level for a power analysis? 3. Explain, in your own words, how you will conduct a power analysis in your experiment or survey.
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You may need to use the appropriate appendix table or technology to answer this question. In the past, 19% of all homes with a stay-at-home parent, the father is the stay-at-home parent. An independent research firm has been charged with conducting a sample survey to obtain more current information. (a) What sample size is needed if the research firm's goal is to estimate the current proportion of homes with a stay-at-home parent in which the father is the stay-at-home parent with a margin of error of 0.03? Use a 95% confidence level. (Round your answer up to the nearest whole number.) (b) Repeat part (a) using a 99% confidence level. (Round your answer up to the nearest whole number.) Need Help? Read It option esc ! 1 T Q A Z 96 2 W S X 88 command Watch It O #3 E Master It a D C $ 4 R F ~ ♫ % 5 V T G m MA 6 MacBook Pro B Y H & 7 U N D W * 8 J P 1 T M ( K 1 & O **** ) O 1 H L cricut P V command T { x + 11 ? option } រ dele
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