Distribution St. Dev. Mean Normal 1.1 in. 23.5 in. Males Normal 1.0 in. 22.7 in. Females
Seat Designs. In Exercises 13–20, use the data in the table below for sitting adult males and females (based on anthropometric survey data from Gordon, Churchill, et al.). These data are used often in the design of different seats, including aircraft seats, train seats, theater seats, and classroom seats. (Hint: Draw a graph in each case.)
Sitting Back-to-Knee Length (inches)
Significance Instead of using 0.05 for identifying significant values, use the criteria that a value x is significantly high if P(X) or greater) ≤ 0.01 and a value is significantly low if P (x) or less) ≤ 0.01. Find the back-to-knee lengths for males, separating significant values from those that are not significant. Using these criteria, is a male back-to-knee length of 26 in. significantly high?
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