etermine the sample size of the following problems. Show your solution. 1.) A dermatologist wishes to estimate the proportion of young adults who apply sunscreen regularly before going out in the sun in the summer. Find the minimum sample size required to estimate the proportion with precision of 5%, and 90% confidence. 2.) The administration at a college w

etermine the sample size of the following problems. Show your solution. 1.) A dermatologist wishes to estimate the proportion of young adults who apply sunscreen regularly before going out in the sun in the summer. Find the minimum sample size required to estimate the proportion with precision of 5%, and 90% confidence. 2.) The administration at a college w

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter4: Equations Of Linear Functions

Section: Chapter Questions

Problem 8SGR

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Determine the sample size of the following problems. Show your solution. 1. An internet service provider wishes to estimate, to within five percentage error, the current proportion of all email that is spam, with 95% confidence. Last year the proportion that was spam was 80%. Estimate the minimum size sample required if the total email that is spam is 10,000.
4.2 how large a sample in necessary if we want our estimate to be within 5% of the actual proportion with 99% confidence?
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Give two reasons why it would be necessary to examine a sample of the shirts produced rather than examine the entire weekly production.
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Use the given data to find the minimum sample size required to estimate the population proportion.
The bookstore at IRSC would like to estimate the proportion of students who prefer electronic textbooks (eBooks) over printed textbooks (hard copies). A random sample of 30 students was surveyed. Their preferences are listed below. hard copy hard copy hard copy hard copy eBook hard copy hard copy hard copy hard copy hard copy hard copy hard copy hard copy hard copy hard copy hard copy hard copy hard copy hard copy hard copy eBook eBookeBook hard copy hard copy hard copy hard copy hard copyhard copy hard copy Determine the point estimate, and the sample standard deviation, hat p; s hat p Round the sample proportion to four decimal places and round the standard deviation to six decimal places, if necessary hat p = Box; s_{p} = Using a 96% confidence level, determine the margin of error, E, and a confidence interval for the proportion of all students at the college who work prefer eBooks over printed textbooksReport the confidence interval using interval notationReport the solutions in…
A previous study indicates the proportion of households with two cars is 22%