Answers to a Questionnaire Were in the Following Sequence

Essay

Answers to a questionnaire were in the following sequence. Test for randomness.
$\begin{array} { l l l l l l l l l l } \mathrm { Y } & \mathrm { Y } & \mathrm { N } & \mathrm { Y } & \mathrm { N } & \mathrm { N } & \mathrm { N } & \mathrm { N } & \mathrm { Y } & \mathrm { Y } \end{array}$
$\begin{array} { l l l l l l l l l l } \mathrm { N } & \mathrm { N } & \mathrm { N } & \mathrm { N } & \mathrm { Y } & \mathrm { Y } & \mathrm { Y } & \mathrm { N } & \mathrm { N } & \mathrm { N } \end{array}$