The supervisor of a tourist information desk at a local airport is interested in how long it takes an employee to serve a customer. Using a stopwatch, he measures the amount of time it takes for each of 10 customers.
These times, measured in minutes, are reported as follows: 2.3, 1.5, 3.9, 0.6, 2.7, 3.1, 2.8, 0.9, 1.4, and 2.6. Calculate the standard deviation and the interquartile range.
Question 2
Which of the following tests employs matched-pairs sampling?
A) The Wilcoxon signed rank test
B) The Wilcoxon rank sum test
C) The Mann-Whitney test
D) The Durbin-Watson test
Blue whale skeleton, outside the Long Marine Laboratory at the University of California, Santa Cruz
Renzo Piano Building Workshop, International departures lounge, Kansai International Airport, Osaka, ...
Laboratory Requisition Information
A cutaway of a typical water pump showing the long bearing assembly and the seal. The weep hole is ...
Chemical structures of ester and amide local anesthetics.
Basal cell carcinoma is a local contraindication for massage.