quick reference during this activity.Confidence level Critical value0.90z* = 1.6450.95* = 1.9600.99*=D2.576Jump to level 1A poll for a statewide election has a margin of error of 2.15 percentage points.How many voters should be sampled for a 99% confidence interval? Round uto the nearest whole number.EX1234voters

We have given that Margin of error =E = 0.0215 The critical value for α=0.01 is zc = 2.576

Answered: 1or quick reference during this…

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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Conclusion: Print : 6. Suppose the hypotheses for a statistical test are Ho: P₁ P₂ vs H P P₂. For each possible confidence interval given below, state a conclusion of the test for that sample (either R for "Reject Ho" or DNR for "Do not reject Ho") and give the significance level used. (a) 95% confidence interval for p₁-P₂: -0.41 to 0.05 Conclusion: (b) 90% confidence interval for P₁-P₂: -0.53 to -0.12 (c) 99% confidence interval for P₁-P₂: -0.21 to 0.33 Conclusion: Find EP Immersive Reader Significance level: Significance level Significance level J
If a school district takes a random sample of 55 Math SAT scores and finds that the average is 422, and knowing that the population standard deviation of Math SAT scores is intended to be 100. Find a 99% confidence interval for the mean math SAT score for this district. ______ ≤ μ ≤ _______
K Find the critical value Za/2 that corresponds to the confidence level 85%. Zal2 = (Round to two decimal places as needed.) C
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Critical values for quick reference during this activity. Confidence level Critical value 0.90 z* = 1.645 0.95 z* = 1.960 0.99 z* = 2.576 Jump to level 1 A poll for a statewide election has a margin of error of 2.22 percentage points. How many voters should be sampled for a 99% confidence interval? Round up to the nearest whole number. Ex: 1234 voters
ch.8 proportions question4 Assume that a sample is used to estimate a population proportion p. Find the 99% confidence interval for a sample of size 143 with 65% successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places.C.I. =
Using t-tables, software, or a calculator, estimate the critical value of t for a 90% confidence interval with df=4. Round to three decimal places as needed. Question content area bottom Part 1 A. 1.645 B. 4.604 C. 2.132 D. 2.353 E. 1.533
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If n= 21, x¯(x-bar)= 37, and s= 20, construct a confidence interval at a 99% confidence level. Assume the data came from a normally distributed population.Give your answers to one decimal place. ____ < μ < ___
Population 2 Assume that both populations are normally distributed. (a) Test whether µ, # H, at the a = 0.05 level of significance for the given sample data. Population 1 n 16 16 (b) Construct a 95% confidence interval about u, - 42. 10.9 8.7 2.2 2.6 ...
In a recent poll, 430 people were asked if they liked dogs, and 94% said they did. Find the Margin of Error for this poll, at the 95% confidence level. Give your answer to four decimal places if possible. ______________________

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