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By asking the right questions, we can help move a buyer through the decision making process.

What symbol is used to identify the standard error of M?

A vertical line is drawn through a normal distribution at z = 0.80.  What proportion of the distribution is on the right-hand side of the line?

An aquarium of fish has 15 blue fish, 10 red fish, and 5 green fish. What is the probability of randomly selecting a green fish?

What symbol is used to identify the standard error of M?

A population of n = 4 scores has a standard error of 10 points.  For the same population, what is the standard error for a sample of n = 16 scores?

For a particular population, a sample of n = 9 scores has a standard error of 8.  For the same population, a sample of n = 16 scores would have a standard error of ____.

A population of n = 4 scores has a standard error of 10 points.  For the same population, what is the standard error for a sample of n = 16 scores?

If random samples, each with n = 9 scores, are selected from a normal population with µ = 80 and σ = 36, then what is the expected value for the Mean of the distribution of sample means?

A distribution of scores has µ = 30, σ = 44, and is is negatively skewed. Consider the sampling distribution of the mean for samples of n = 121. a) Explain what a sampling distribution of the means (SDOM) is or how it is created. b) Then list for this sampling distribution the values for the mean and standard error of the mean, and name the shape. Mean = SE of Mean = Shape of Distribution =