The mean age of the employees at a large corporation is 35.2 years, and the standard deviation is 9.5 years. A random sample of 4 employees will be selected. What are the mean and standard deviation of the sampling distribution of the sample mean for samples of size 4 ?     The mean is 35.2, and the standard deviation is 9.5. A The mean is 35.2, and the standard deviation is 9.54. B The mean is 35.2, and the standard deviation is 9.52. C The mean is 35.24, and the standard deviation is 9.54. D The mean is 35.22, and the standard deviation is 9.52. E   Chose A, B, C, D, OR E

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A:

Q: The mean and standard deviation of the sampling distribution of the mean is shown as?

A:

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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.