P3.2 Data Description. Universal Package Service, Ltd., delivers small parcels to business addresses

P3.2 Data
Description. Universal Package Service, Ltd., delivers small parcels to
business addresses in the Greater Boston area. To learn more about the demand
for its service, UPS has collected the following data on the number of
deliveries per week for a sample of ten customers:
A. Calculate the
mean, median, and mode measures of central tendency for the number of
deliveries per week. Which measure does the best job of describing central
tendency for this variable?
B. Calculate the
range, variance, and standard deviation for this data series. Which measure
does the best job of describing the dispersion in this variable?
P3.3 Data
Description. Scanning America, Inc., is a small but rapidly growing firm in
the digitized document translation business. The company reads architectural
and engineering drawings into a scanning device that translates graphic
information into a digitalized format that can be manipulated on a personal
computer or workstation. During recent weeks, the company has added a total
of 10 new clerical and secretarial personnel to help answer customer
questions and process orders. Data on the number of years of work experience
for these ten new workers are as follows:
A. Calculate the
mean, median, and mode measures of central tendency for the number of years
of work experience. Which measure does the best job of describing central
tendency for this variable?
B. Calculate the
range, variance, and standard deviation for this data series, and the 95%
confidence interval within which you would expect to find the populationâ€™s
true mean.