The 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.

-0.65	-0.80	-0.37	-0.17	0.19	-0.48	0.65	0.48	-0.15
-0.71	-0.14	-0.21	-0.18	-0.30	-0.59	-0.39	-0.80	0.45

H₀: = 0

H₁: 0

Is it reasonable to conclude that the mean gain or loss in time for the watches is 0? Use the 0.10 significance level.

a. At a level of 0.10 significance, we reject H₀: = 0. (Negative answer should be indicated by a minus sign. Round the final answers to 3 decimal places.)

If t < or t > , reject H₀.

b. What is the value of the test statistic? (Round the final answer to 3 decimal places.)

Value of the test statistic =

c. What is your decision regarding H₀?

(Click to select) Do not reject Reject H₀: = 0.

d. What is the p-value?

The p-value is (Click to select) 0.020 and 0.05 0.050 and 0.10 .