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A driver buys gasoline either at a Texaco station T

A driver buys gasoline either at a Texaco station, T, or at a Mobil station, M, and the following arrangement shows the order of the stations from which she bought gasoline over a certain period of time:

T T T M T M T M M T T M T M T M T M M T M T

Test for randomness at the 0.05 level of significance.

T T T M T M T M M T T M T M T M T M M T M T

Test for randomness at the 0.05 level of significance.

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