Question: Two methods have been developed to determine the nickel content of steel. In a sample of five replications of the first method on a certain

Two methods have been developed to determine the nickel content of steel. In a sample of five replications of the first method on a certain kind of steel, the average measurement (in percent) was and the standard deviation was . The average of seven replications of the second method was
and the standard deviation was . Assume that it is known
that the population variances are nearly equal.
a) Can we conclude that there is a difference in the mean measurements
between the two methods?
b) What informed your choice of solution method?

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