Question: Refer to Exercise 10.67. Evaluate: (a) Sign test statistic. (b) Signed-rank statistic. Data from in Exercise 10.67 A sample of river water is divided into

Refer to Exercise 10.67. Evaluate:
(a) Sign test statistic.
(b) Signed-rank statistic.

Data from in Exercise 10.67

A sample of river water is divided into two specimens. One is randomly selected to be sent to Lab A and the other is sent to Lab B. This is repeated for a total of nine times. The measurement of suspended solids at Lab B is subtracted from that of Lab A to obtain the differences

12 10 15 42 11 -4 -2 10 -7

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