The mean annual tuition and fees for a sample of 11 private colleges was $32,400 with a standard deviation of $4900. A dotplot shows that it is reasonable to assume that the population is approximately normal. You wish to test whether the mean tuition and fees for private colleges is different from $34,400. Compute the value of the test statistic and state the number of degrees of freedom. -1.354; 11 degrees of freedom O -0.408; 11 degrees of freedom -0.408; 10 degrees of freedom -1.354; 10 degrees of freedom

The mean annual tuition and fees for a sample of 11 private colleges was $32,400 with a standard deviation of $4900. A dotplot shows that it is reasonable to assume that the population is approximately normal. You wish to test whether the mean tuition and fees for private colleges is different from $34,400. Compute the value of the test statistic and state the number of degrees of freedom. -1.354; 11 degrees of freedom O -0.408; 11 degrees of freedom -0.408; 10 degrees of freedom -1.354; 10 degrees of freedom

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Description: The mean annual tuition and fees for a sample of 11 private colleges was $32,400 with astandard deviation of $4900. A dotplot shows that it is reasonable to assume that thepopulation is approximately normal. You wish to test whether the mean tuition

MATLAB: An Introduction with Applications

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Publisher:Amos Gilat

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Concept explainers

Inverse Normal Distribution

The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.

Mean, Median, Mode

It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.

Z-Scores

A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.

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Question

The mean annual tuition and fees for a sample of 11 private colleges was $32,400 with a
standard deviation of $4900. A dotplot shows that it is reasonable to assume that the
population is approximately normal. You wish to test whether the mean tuition and fees
for private colleges is different from $34,400.
Compute the value of the test statistic and state the number of degrees of freedom.
-1.354; 11 degrees of freedom
O -0.408; 11 degrees of freedom
-0.408; 10 degrees of freedom
-1.354; 10 degrees of freedom

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