Scrapper Elevator Company has 20 sales representatives who sell its product throughout the United States and Canada. The number of units sold last month by each representative is listed below. Assume these sales figures to be the population values. PLEASE DO SUBPARTS E and F (last 2 questions) 2 3 2 3 3 4 2 4 3 2 2 7 3 4 5 3 3 3 3 5 Click here for the Excel Data File Draw a graph showing the population distribution. (Click on the x-axis exactly below the "0" point and then drag the bar till it reaches the correct answer.) Compute the population mean. (Round your answer to 1 decimal place.) Compute the standard deviation. (Round your answer to 2 decimal places.)
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.
Scrapper Elevator Company has 20 sales representatives who sell its product throughout the United States and Canada. The number of units sold last month by each representative is listed below. Assume these sales figures to be the population values.
PLEASE DO SUBPARTS E and F (last 2 questions)
| 2 | 3 | 2 | 3 | 3 | 4 | 2 | 4 | 3 | 2 | 2 | 7 | 3 | 4 | 5 | 3 | 3 | 3 | 3 | 5 |
Click here for the Excel Data File
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Draw a graph showing the population distribution. (Click on the x-axis exactly below the "0" point and then drag the bar till it reaches the correct answer.)
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Compute the population
mean . (Round your answer to 1 decimal place.)
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Compute the standard deviation. (Round your answer to 2 decimal places.)
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If you were able to list all possible samples of size five from this population of 20, how would the sample means be distributed?
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What would be the mean of the sample means? (Round your answer to 2 decimal places.)
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What would be the standard deviation of the sample means? (Round your answer to 2 decimal places.)
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