An article presents measurements of total solids, in g/L, for seven sludge specimens. The results are 19, 5, 26, 43, 25, 20, and 32. Assume the distribution of total solids is approximately symmetric.
An environmental engineer claims that the mean concentration of total solids is equal to 18 g/L. Can you conclude that the claim is false? Compute the appropriate test statistic and find the P-value.
The appropriate test statistic and the p-values are ______ and ______ respectively. Round the P-value to four decimal places.