stats question

You want to reject the hypothesis that the mean cost of of a laptop computer is no more than $600. 120 laptop computers will be randomly selected. Select the correct model from the list. O One sample, Z test of proportion O Pooled variance t-test O F-test comparing variances O One sample, Chi-square test of variance O Matched pairs t-test O One sample, t test for mean O Unequal variance t-test