Could you please assist me with this question?

thanks in advance,

6. The security department of a factory wants to know whether the true average time required by the night guard to walk his around is 30 minutes. In a random sample of 32 rounds, the night guard averaged 30.8 minutes with a standard deviation of 1.5 minutes. (a) Determine whether there is sufficient evidence to reject the null hypothesis # = 30 minutes in favor of the alternative hypothesis # # 30 minutes based on this sample. Use the 0.01 level of significance. (b) Find the p-value and indicate whether use of the p-value lead you to the same conclusion regarding significance at the 0.01 level