If one has a small sample (sample size <30), the distribution of the sample mean will be normal (check all that apply) a.Only if the population is normally distributed b.Only if the population is infinite c.Only if the population is finite d.Regardless of the distribution of the population

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A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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If one has a small sample (sample size <30), the distribution of the sample mean will be normal (check all that apply)

	a.	Only if the population is normally distributed
	b.	Only if the population is infinite
	c.	Only if the population is finite
	d.	Regardless of the distribution of the population

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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Null and alternative hypotheses are statements about: (check all that apply)

	a.	sample parameters.
	b.	it depends - sometimes population parameters and sometimes sample statistics.
	c.	sample statistics.
	d.	population parameters.

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