A random sample of 130130 observations produced a mean of ?=30.2x¯=30.2 from a population with a normal distribution and a standard deviation ?=4.49σ=4.49. (a) Find a 99% confidence interval for ?μ (b) Find a 95% confidence interval for ?μ (c) Find 90% confidence interval for ?μ
A random sample of 130130 observations produced a mean of ?=30.2x¯=30.2 from a population with a normal distribution and a standard deviation ?=4.49σ=4.49. (a) Find a 99% confidence interval for ?μ (b) Find a 95% confidence interval for ?μ (c) Find 90% confidence interval for ?μ
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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Question
A random sample of 130130 observations produced a mean of ?=30.2x¯=30.2 from a population with a
(a) Find a 99% confidence interval for ?μ
(b) Find a 95% confidence interval for ?μ
(c) Find 90% confidence interval for ?μ
Expert Solution
Step 1: Given Information:
It is given that
x̄ = 30.2
σ = 4.49
n = 130
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Solved in 5 steps
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