Answered: Construct a 99% confidence interval 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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Construct a 99% confidence interval to estimate the population mean using the accompanying table. What assumptions need to be made to construct this interval?

x(sample mean)= 82

o(population standard deviation)= 20

n(sample size)= 16

What assumptions need to be made to construct this interval?

a) the population is skewed to one side

b) the population mean will be in the confidence interval

c) the sample size is less than 30

d) the population must be normally distributed

With 99% confidence, when n= 16, the population mean is between the lower limit of __ and the upper limit of __.

Please help! i am lost

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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