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Point estimators-trimmed mean

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A random sample of 20 vice presidents of Fortune 500 firms is taken. The amount each vice president paid in federal taxes as a percentage of gross income is determined. The data are

16.0 18.1 18.6 20.2 21.7 22.4 22.4 23.1 23.2 23.5
24.1 24.3 24.7 25.2 25.9 26.3 27.9 28.0 30.4 33.7

a. Compute the sample mean and median.

b. Compare the 20% trimmed mean; that is, delete the lowest 10% and the highest 10% of the data and find the mean of the remainder.

Please include any charts and graphs.

Reference no: EM1390657

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