Comparing scales: 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 on Scale 1	Weight on Scale 2
1	12.02	12.28
2	15.51	15.71
3	9.00	8.93
4	11.34	11.26
5	25.29	25.75
6	9.79	10.09
7	14.41	14.87
8	7.05	7.11
9	13.52	13.70
10	21.12	20.70

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Let

1

represent the mean weight on Scale 1 and

=d12

. Can you conclude that the the mean weight differs between the Scales? Use the

=0.05

level of significance and the TI-84 Plus calculator to answer the following.

Part:2 / 4

Part 2 of 4

(b) Compute the P-value. Round the answer to at least four decimal places.

P -value =