Determine the critical value(s) for a left-tailed hypothesis test for a mean with the given characteristics. Round any z-value solution to two decimal places. Round any t-value solution to four decimal places. . a = 0.02 . The sample size is 58 . The population standard deviation (o) is known to be 1.3 Should the t or z distribution be used for the above scenario? O The Student's t distribution should be used The standard normal (z) distribution should be used The critical value(s) for the test are given by z v =