-4 points DevoreStatB 1.E.044 An article reported the following data on oxygen c

Question

-4 points DevoreStatB 1.E.044 An article reported the following data on oxygen consumption (mL/kg/min) for a sample of ten firefighters performing a fire-suppression simulation: 28.3 49,2 30.8 28,8 28.8 25.7 33,9 29.7 23.0 30.6 Compute the following. (Round your answers to four decimal places (a) The sample range mL/kg/min (b) The sample variance s2 from the definition e., by first computing deviations, then squaring them, etc.) mL /kg /min (c) The sample standard deviation mL kg/min (d) s2 using the shortcut method mL /kg /min?

Explanation / Answer

a)Range =Highest - Lowest =49.2 - 23 =26.2

b) variance= sum(x-mean)^2 / (n-1) =450.5/10 =45.05

c) Standard deviation =sqrt(var) =6.71

d) Variance=45.05

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