In a random sample of males, it was found that 25 write with their left hands and 210 do not. in a random sample of females, it was found that 61 write with their left hands and 446 do not. use a 0.01 significance level to test the claim that the rate of left-handedness among males is less than that among females. complete parts

Anew obstacle course is home to several new types of challenging obstacles. one such obstacle is traversing a 15-stair staircase. to make it more challenging, the stairs are not uniformly spaced. rather, the vertical space between consecutive stairs for the first 10 stairs is 113 feet and the vertical space for the last 5 stairs is 134 feet. what is the total vertical distance traveled ascending and descending the entire 15-stair staircase?