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. The significance level of the test is 5% .The sample size is 41 .The population standard deviation (a) is not known Should the t or z distribution be used for the above scenario? The standard normal (2) distribution should be used The Student's t distribution should be used The critical value(s) for the test are given by ? =| Question Help