Given a simple random sample of size n = 18 from a Normal population with mean and standard deviation , we test the hypotheses (see picture)

Given a simple random sample of size n = 18 from a Normal population with mean , and standard deviation o , we test the hypotheses HO: # = 150 against HI: # # 150 at the 5% significance level. If o is unknown, and the observed value of the test statistic is -2.08, determine the result of the test. O (a) The test rejects HO in favour of H1. O (b) The test does not reject HO in favour of H1. O (c) More information is required to determine the result of the test