please help solve the q 1 ,as soon as possible thanks

A restaurant claims that its average waiting time is less than 12 minutes from the time an order is placed. The waiting times of 40 customers have been recorded. The survey shows that the average waiting time is 11 minutes and standard deviation is 2 minutes. (a) The null hypothesis and alternative hypothesis should be formulated as Ho: and HA: , respectively. (2 marks) (b) The test statistic that can be used to test this hypothesis is a/an (Z, t, X2, of F) with a value of (Round to two decimal places.) (2 marks) (c) If the significant level is 5%, the null hypothesis (can or cannot) be rejected because the p-value is . (Round to two decimal places.) (2 marks)