In this problem, assume that the distribution of differences is approximately normal. Note: For degrees of freedom d.f. not in the Student's t table, use the closest d.f. that is smaller. In some situations, this choice of df. may increase the P-value by a small amount and therefore produce a slightly more "conservative" answer. Is shing better from a boat or from the shore? Pyramid Lake is located on the Paiute Indian Reservation in Nevada. Presidents, movie stars, and people who just want to catch sh go to Pyramid Lake for really large cutthroat trout. Let row B represent hours per fish caught shing from the shore, and let row A represent hours per sh caught using a boat. The following data are paired by month from October through April. Oct Nov Dec Jan Feb March April B: Share 1.4 1.7 2.0 3.2 3.9 3.6 3.3 A: Boat 1.3 1.3 1.7 2.2 3.3 3.0 3.8 USE SALT Use a 1% level of signicance to test if there is a difference in the population mean hours per sh caught using a boat compared with shing from the shore. (Let 0' = B A.) (a) What is the level of signicance? State the null and alternate hypotheses. Will you use a lefttailed, righttailed, or two-tailed test? 0 HO: \"d = 0; H1: \"d > 0; righttailed O HO: \"d a 0; H1: \"d = 0; two-tailed O H0:;1d = 0; H1: \"d 0.500 O 0.250 \"2 O HO: \"1