E-text Assign 2 - E-Text Assignment 1 E-Text Assignment...

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E-Text Assignment 1 E-Text Assignment Chapter 8 E-Text Assignment Chapter 8 University of Phoenix
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E-Text Assignment 2 5. State the main points of the Central Limit Theorem for a mean. The Central Limit Theorem states that a random sample of size n is drawn from a population with mean µ and standard deviation σ, the distribution of the sample mean approaches a normal distribution with the mean and standard deviation as the sample increases. If the sample is large enough the sample means will have approximately a normal distribution even if the population is not normal. 6. Why is population shape of concern when estimating a mean? What does sample size have to do with it? Population shape is of concern when estimating a mean because if the population shape is skewed to one side or the other it makes estimating the mean more difficult. However, if the population shape is normally distributed (bell shape) then estimating the mean is relatively easy. The sample size helps to estimate the mean. As the sample size increases, so does the chances of
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This note was uploaded on 06/28/2010 for the course RES 341 Res 341 taught by Professor Professor during the Spring '09 term at University of Phoenix.

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E-text Assign 2 - E-Text Assignment 1 E-Text Assignment...

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