Hi! Could you help me with the following problem?

Suppose that you want to test the mean fineness of yarn and the value is expected to be greater than 5 fineness units. To test this claim, you graded 16 specimens of yarn and found the average, X-bar, to be 5.9 fineness units. Assume that the fineness measure is normally distributed with unknown variance. First, identify the appropriate test statistic to use to test your hypothesis. Then, assuming that the standard deviation of the sample is 2.4, calculate the test statistic for your sample and determine if the associated p-value is less than or greater than 0.05.

Thanks!