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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 23.524.1 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.
Determine the event that the sum of the numbers falling uppermost is less than or equal to 7
The budgeting process for a Midwestern college resulted in expense forecasts for the coming year (in $ millions) of $9, $10, $11, $12, and $13. Since the actual expenses are unknown, the following respective probabilities are assigned: .3, .2, .25..
Solve different inventory control problems using an appropriate OR method.
Results are comparable to what could be expected in human serum. Are true binding percentages for five antibiotics tested all equal? Let α = 0.05.
A group of students collected data at the Cedar Point amusement park and reported that the "wait time" to ride the "Top Thrill Dragster" roller coaster is consistently distributed within a range of 40 minutes to 90 minutes.
A school tracks the absences of pupils as part of a flu surveillance system. Regular reporting of absences among 25 students in grade 1 are taken, and based on these data, the long-run proportion of absences under normal conditions is estimated to..
Dr. Richmond, a psychologist, is studying the daytime television viewing habits of college students.
To findout 95 percent with confidence interval for the mean amount a citation. Police Chief Aaron Ard of River City reports 500 traffic citations were issued last month.
Do you benefit by using a cum sum chart rather than a control chart?
Create a scenario where the binomial probability formula could be used to determine the probability of some number of successes, x, in some given number of trials,n.
Why might the assumption of independence be violated? (b) Why might a driver be tempted not to use a seat belt "just on this trip"?
You perform a one sample mean hypothesis test on a random sample of data and observe a p-value of 0.2157. What is the appropriate conclusion? Conclude at the 5% level of significance.
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