The following data represent the muzzle velocity (in feet per second) of rounds fired from a 155-mm gun. For each round, two measurements of the velocity were recorded using two different measuring devices, resulting in the following data. Complete parts (a) through (d) below. Observation 1 2 3 4 5 6 A 794.4 792.9 793.6 791.1 791.8 793.7 799.5 791.1 799.8 786.3 795.2 790.1 Let d; = A; - B; Identify the null and alternative hypotheses. Ho: Hd = 0 H1: Hd # 0 Determine the test statistic for this hypothesis test. to =(Round to two decimal places as needed.)