A sample of size n = 92 is drawn from a normal population whose standard deviation is o=7.6. The sample mean is x = 44.16.Part: 0/2Part 1 of 2(a) Construct a 90% confidence interval for u. Round the answer to at least two decimal places.<μ<.A 90% confidence interval for the mean isX$

Answered: A sample of size n=92 is drawn from a…

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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A sample mean, sample standard deviation, and sample size are given. Use the one-mean t-test to perform the required hypothesis test about the mean, μ, of the population from which the sample was drawn. Use the critical-value approach. Sample mean = 43.9 s = 5.3 n = 15 α = 0.05 H0: µ = 32.6 H1: µ ≠ 32.6 The test statistics is (Round to three decimal places)NOTE: QUESTIONS 9-11 ARE RELATED)
A random sample of 21 items is drawn from a population whose standard deviation is unknown. The sample mean is x¯x¯ = 750 and the sample standard deviation is s = 10. Use Appendix D to find the values of Student’s t. (a) Construct an interval estimate of μ with 98% confidence. (Round your answers to 3 decimal places.) The 98% confidence interval is from ___ to____ (b) Construct an interval estimate of μ with 98% confidence, assuming that s = 20. (Round your answers to 3 decimal places.) The 98% confidence interval is from ___ to____ (c) Construct an interval estimate of μ with 98% confidence, assuming that s = 40. (Round your answers to 3 decimal places.) The 98% confidence interval is from ___ to____
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A sample of size n=92 is drawn from a normal population whose standard deviation is a = 7.6. The sample mean is x = 44.16. Part: 0/2 Part 1 of 2 (a) Construct a 90% confidence interval for μ. Round the answer to at least two decimal places. 0<μ<0. A 90% confidence interval for the mean is X