**What Influences the Sample Size?**We examine the effect of different inputs on determining the sample size needed to obtain a specific margin of error when finding a confidence interval for a proportion.Find the sample size needed to give, with 99% confidence, a margin of error within ±5% when estimating a proportion. First, find the sample size needed if we have no prior knowledge about the population proportion \( p \). Then find the sample size needed if we have reason to believe that \( p \approx 0.7 \). Finally, find the sample size needed if we assume \( p \approx 0.9 \).Round your answers up to the nearest integer.| Population proportion | Sample Size ||-----------------------|-------------|| No knowledge: | [ Input ] || 0.7 : | [ Input ] || 0.9 : | [ Input ] |

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Answered: What Influences the Sample Size? We…

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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In a study of government financial aid for college students, it becomes necessary to estimate the percentage of full-time college students who earn a bachelor's degree in four years or less. Find the sample size needed to estimate that percentage. Use a 0.05 margin of error and use a confidence level of 99%. Complete parts (a) through (c) below.
Use the given to find the minimum sample size required to estimate a population proportion or percentage. Margin of error :0.09, confidence level 95%; p and Q unknown
may i know the answer??????????
An independent measures study with n = 6 in each sample produces a sample mean difference of 8 points and Sm1-m2= 2. What is the value for the T statistic? A. 1 B. 2 C. 4 D. 4/-8
Sample size and the confidence interval width have a(n) ______ relationship. a. symbiotic b. inverse c. synonymous d. identical
We wish to estimate what percent of adult residents in Ventura County like chocolate. Out of 500 adult residents sampled, 429 like chocolate. To construct a 99% confidence interval for the proportion (p) of adult residents who like chocolate in Ventura County, you need to use which one of the following calculator? Hypothesis Test for a Population Proportion Confidence Interval for a Population Mean Given Data Confidence Interval for a Population Mean Given Statistics Chi-Square Test for Independence Hypothesis Test for a Population Mean Given Data Two Dependent Sample Means Comparison Given Data Confidence Interval for a Population Proportion Hypothesis Test for a Population Mean Given Statistics One-Way ANOVA Two Independent Sample Means Comparison Given Statistics Two Independent Sample Means Comparison Given Data Two Independent Proportions Comparison Chi-Square Test for Goodness of Fit Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents)…
If you want to construct a 90% confident interval for a population mean such that it is within a quarter (population) standard deviation from the sample mean, then what is the minimum sample size required?
Use technology to help you test the claim about the population mean, μ, at the given level of significance, x, using the given sample statistics. Assume the population is normally distributed. Claim: μ> 1270; α=0.02; a=214.81. Sample statistics: x= 1293.27, n = 275 Identify the null and alternative hypotheses. Choose the correct answer below. OA. Ho: > 1270 OB. Ho: 21270 H₂H1270 H₂H1270 c. Ho: H≤ 1270 H₂: H> 1270 OE. Ho: s1293.27 H₂: > 1293.27 Calculate the standardized test statistic. The standardized test statistic is 1.80. (Round to two decimal places as needed.) Determine the P-value. P= (Round to three decimal places as needed.) OD. Ho: > 1293.27 H₂: Hs 1293.27 OF. Ho: 2 1293.27 H₂: <1293.27
How is the sample size related to the margin of error and confidence level? What isthe impact of S.D. on sample size? Comments with justification. Also fill in theblanks showing necessary calculations in each case: Margin of error S .D. Confidence Level Sample Size 0.4274 5.33 95% ________ 0.8548. 4.79 ___________. 209 0.7948 ______ 90% 249 0.2129 5.79 __________. 2841 __________. 2.54 90% 3720
25. See photo
Find 90% confidence interval
For the specified margin of error and confidence level, obtain a sample size that will ensure a margin of error of at most the one specified. margin of error=0.05;confidence level=95%

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