The mean fineness, u, of yarn is expected to be greater than the standard value of 5 units. To test this claim, the factory graded 16 specimens of the yarn and found the sample average, x", to be 5.9 units. Assume that the measurement of fineness is normally distributed with unknown variance. State the distribution of the appropriate test statistic, T, and find the P- value if the standard deviation of the sample is Group of answer choices S = 2.4. T~t16 and P-value T~N(0,1) and P-value T~t15 and P-value T~t15 and P-value