In an experiment to determine whether there is a systematic difference between the weights obtained with two different scales, 10 rock specimens were weighed, in grams, on each scale. The following data were obtained: Specimen weight scale 1 weight scale 2 1 11.23 11.27 2 14.36 14.41 3 8.33 8.35 4 10.50 10.52 5 23.42 23.41 6 9.15 9.17 7 13.47 13.52 8 6.47 6.46 9 12.40 12.45 10 19.38 19.35 Can you conclude that the mean weight differs between the scales? Use a 1% level of significance. Assume that the weights are normally distributed.
In an experiment to determine whether there is a
systematic difference between the weights
obtained with two different scales, 10 rock
specimens were weighed, in grams, on each
scale. The following data were obtained:
Specimen weight scale 1 weight scale 2
1 11.23 11.27
2 14.36 14.41
3 8.33 8.35
4 10.50 10.52
5 23.42 23.41
6 9.15 9.17
7 13.47 13.52
8 6.47 6.46
9 12.40 12.45
10 19.38 19.35
Can you conclude that the mean weight differs
between the scales? Use a 1% level of
significance. Assume that the weights are
normally distributed.
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