Choose the correct asnwer and gime some brief explaiantionIf a random sample is taken from a population that has normal distribution, then the sample mean will have the following distribution: Free Depends on the number of samplesNormal BinomialThe software install time has a normal distribution with an average of 80 seconds and a standard deviation of 10 seconds. The standard error of sample mean with n=25 is2.5 seconds 8 seconds 2 seconds Other

Formula : Standard error : σₓ̄ = σ/√n

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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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Choose the correct asnwer and gime some brief explaiantion

If a random sample is taken from a population that has normal distribution, then the sample mean will have the following distribution:

Free
Depends on the number of samples
Normal
Binomial

The software install time has a normal distribution with an average of 80 seconds and a standard deviation of 10 seconds. The standard error of sample mean with n=25 is

2.5 seconds
8 seconds
2 seconds
Other

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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