Question

A study of the ability of individuals to walk in a straight line reported the accompanying data on cadence (strides per second) for a sample of n = 20 randomly selected healthy men. 0.91 0.85 0.92 0.95 0.93 0.88 1.00 0.92 0.85 0.81 0.75 0.93 0.93 1.03 0.93 1.06 1.06 0.96 0.81 0.95 A normal probability plot gives substantial support to the assumption that the population distribution of cadence is approximately normal. A descriptive summary of the data from Minitab follows. Variable N Mean Median TrMean StDev SEMean cadence 20 0.9215 0.9300 0.9233 0.0815 0.0182 Variable Min Max Q1 Q3 cadence 0.7500 1.0600 0.8650 0.9550 (a) Calculate and interpret a 95% confidence interval for population mean cadence. (Round your answers to four decimal places.) , strides per second

Answer 1