A sample of 48 tools produced by a machine shows the following sequence of good (G) and defective (D) tools: G G G G G G D D G G G G G G G G G G D D D D G G G G G G D G G G G G G G G G D D G G G G G D...

A sample of 48 tools produced by a machine shows the following sequence of good (G) and defective (D) tools:

Test the randomness of the sequence at the 0.05 significance level. Also use SPSS to test the randomness of the sequence.