Use the sample information x¯x¯ = 38, σ = 4, n = 11 to calculate the following confidence intervals for μ assuming the sample is from a normal population. (a) 90 percent confidence. The 90% confidence interveal is from _____ to _____ (b) 95 percent confidence. The 95% confidence interval is from ____to _______ (c) 99 percent confidence. The 99% confidence interval is from ______ to _______

Use the sample information x¯x¯ = 38, σ = 4, n = 11 to calculate the following confidence intervals for μ assuming the sample is from a normal population. (a) 90 percent confidence. The 90% confidence interveal is from ___ to _ (b) 95 percent confidence. The 95% confidence interval is from to _ (c) 99 percent confidence. The 99% confidence interval is from to _____

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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Confidence interval for the difference between population proportions. (Assume that the samples are randomly selected and independent.) Sample statistics: n₁ = 1000, x₁ = 250, and n₂ = 1200, X2 = 195; Construct a 98% confidence interval for the difference between population proportions p₁ – P2 (1.516, 3.021) (0.047, 0.128) (0.581, 1.819) (-0.621, 0.781)
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What proportion of people living in Quebec believes in Quebec sovereignty? A random sample of n = 375 persons living in Quebec was recently taken, of which K, the number sampled who believe Quebec should be a sovereign nation, was observed to be K=157.(a) Find a 95% confidence interval for the proportion of all persons living in Quebec who believe that Quebec should be a sovereign nation.____________ ≤ μ ≤ ____________(b) Correctly complete the interpretation of the 95%:Based on: ____________ the percentage of: A. everyone living in Quebec that belive in sovereignty B. everyone sampled who live in Quebec that belive in sovereignty is somewhere between ____________ % and ___________ %.