The Sample Standard Deviation of Sodium Concentration in Whole Blood $s _ { 1 } = 40.5 ,$

question 73

Essay

The sample standard deviation of sodium concentration in whole blood (mEq/L) for m = 20 marine eels was found to be $s _ { 1 } = 40.5 ,$ whereas the sample standard deviation of concentration for n = 20 freshwater eels was $s _ { 2 } = 32.5$ . Assuming normality of the two concentration distributions, test at level .10 to see whether the data suggests any difference between concentration variances for the two types of eels.

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