Watch Corporation of Switzerland claims that its watches on average will neither gain nor lose time during a week. A sample of 18 watches provided the following gains (+) or losses (-) in seconds per week. Click here for the Excel Data File -0.33 -0.31 a-1. -0.18 -0.66 -0.40 -0.44 -0.26 -0.43 +0.30 -0.69 -0.19 -0.08 +0.32 -0.17 +0.38 -0.37 -0.11 +0.08 Is it reasonable to conclude that the mean gain or loss in time for the watches is 0? Use the .05 significance level. At a level of .05 significance, we reject H0: = 0 if t < or t > . (Negative amounts should be indicated by a minus sign. Round your answers to 3 decimal places.) a-2. The value of the test statistic is . (Negative amount should be indicated by a minus sign. Round your answer to 3 decimal places.) a-3. H0: = 0. The p-value is (Click to select) (Click to select)