In a factory, 20 observations of the factors that could heat up a conveyor belt yielded the following results:0.36,0.41,0.25,0.34,0.28,0.26,0.39,0.28,0.40,0.26,0.35,0.38,0.29,0.42,0.37,0.37,0.39,0.32,0.29 and 0.36 . Use the sign test at the 0.01 level of significance to test the null hypothesis \(\tilde{\mu}=0.34\) against the alternative hypothesis \(\widetilde{\mu} eq 0.34\).