Consider the hypothesis test given by
In random sample of 49 subjects, the sample mean is found to be The population standard deviation is known to be
(a) Is this test for population proportion, mean or standard deviation? What distribution must you apply for the critical value?
(b) Is the test right-tailed, left-tailed or two-tailed test?
(c) Determine the test statistic. (Show work and round the answer to two decimal places)
(d) Find out the P-value for this test. (Show work and round the answer to three decimal places)
(e) Is there sufficient evidence to justify the rejection of at the level? Explain.