Two methods for measuring the concentration of salt in water are being compared….

Two methods for measuring the concentration of salt in water are being compared. Ten measurements made by method A have a mean of 13 g/ L with a standard deviation of 3 g/L. Fifteen measurements made by method B have a mean of 18 g/L and a standard deviation of 3 g/L. Can you conclude that the mean measurements differ between the two methods? Show all steps in the appropriate hypothesis test. Does your conclusion change if you assume equal variances

 

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