(H) and tails (T) is obtained  ,CAST STUDY  solution

Read and analyse the following case and answer the questions given at the end.

In 30 tosses of a coin the following sequence of heads (H) and tails (T) is obtained

: HTTHTHHHTHHTTHT

 HTHHTHTTHTHHTHT

(a       (a)  Determine the number of runs, V

(b       (b) Test at the 0.05 significance level whether the sequence is random ?