What is the meaning of x ~ N (50, 20)? 1.Sampling distribution of x is distributed with a mean of 20 and a standard deviation of 50 2.x-bar is normally distributed with a mean of 20 and a standard deviation of 50 3.x is normally distributed with a mean of 50 and a standard deviation of 20 4.Sampling distribution of x is distributed with a mean of 50 and a standard deviation of 20

The notation 'x ~ N (50, 20)' is a way of expressing a particular type of probability distribution…

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Understanding Business

12th Edition

ISBN:9781259929434

Author:William Nickels

Publisher:William Nickels

Chapter1: Taking Risks And Making Profits Within The Dynamic Business Environment

Section: Chapter Questions

Problem 1CE

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What is the meaning of x ~ N (50, 20)?

	1.	Sampling distribution of x is distributed with a mean of 20 and a standard deviation of 50
	2.	x-bar is normally distributed with a mean of 20 and a standard deviation of 50
	3.	x is normally distributed with a mean of 50 and a standard deviation of 20
	4.	Sampling distribution of x is distributed with a mean of 50 and a standard deviation of 20

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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