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A manufacturer produces plastic golf tees. The injector molder produces golf tees that are designed to have an average height of 60 mm. To determine if this specification is met, random samples are taken from the production floor. One sample is contained in the table below. 60.52 59.73 60.34 59.91 58.79 61.32 59.88 Test the appropriate null and alternative hypotheses at a 0.04 level of significance. Assume that the population follows a normal distribution with a standard deviation of 4.55mm. What is/are the critical value(s)? +2.3263 +2.0537 +2.5167 +2.6122