a.The meanb.The standard deviationANS:a.24b.3.77 7.The following data show the yearly salaries of football coaches at some state supported universities.SalaryUniversity(in $1,000)A53B44C68D47E62F59G53H94For the above sample, determine the following measures. 8. The ages of a sample of 8 faculty members selected from the School of Business Administration are shown below.FacultyAge142230373450551637742859
9.The grade point average of the students at UTC is 2.80 with a standard deviation of 0.84. The grade point average of students at UTK is 2.4 with a standard deviation of 0.84. Which university shows a more dispersed grade distribution? 10.The following is a frequency distribution for the ages of a sample of employees at a local company.AgeFrequency30 - 39240 - 49350 - 59760 - 69570 - 791 11. A local university administers a comprehensive examination to the recipients of a B.S. degree in Business Administration. A sample of examinations are selected at random and scored. The results are shown below.Grade9365809785879760
For the above data, determine a.The meanb.The medianc.The moded.The standard deviatione.The coefficient of variationANS:a.83b.86c.97d.14.01e.16.88%12.The number of hours worked per week for a sample of ten students is shown below.StudentHours1202031841652264078869301040a.Determine the median and explain its meaning.b.Compute the 70th percentile and explain its meaning.c.What is the mode of the above data? What does it signify?ANS:a.19; approximately 50% of the students work at least 19 hoursb.26; at least 70% of the students work less than or equal to 26 hours per weekc.40; the most frequent data element13.The frequency distribution below shows the monthly expenditure on gasoline for a sample of 14 individuals.ExpenditureFrequency55 - 59260 - 64365 - 69470 - 74375 - 792
14.The average wage of Tennessee cashiers is $14 per hour with a standard deviation of $4.20. In Georgia, the average wage of cashiers is $16 with a standard deviation of $4.40. In which state do the wages of cashiers appear to be more dispersed? 15.A researcher has obtained the number of hours worked per week during the summer for a sample of fifteen students.
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