Question a) Check attachment: To test the claim that the resistance of electric wire can be reduced by more that 0.05 ohm by alloying, 34 values obtained for standard wire yielded x1=0.147ohm and s1=0.005 ohm, and 34 values obtained for alloyed wire yielded x2=0.086x2 ohm and s2=0.004. At the 0.01 level of significance, does this support the claim?

('I point) To test the claim that the resistance of electric wire can be reduced by more that 0.05 ohm by alloying, 34 values obtained for standard wire yielded {1 = 0.147 ohm and 51 = 0.005 ohm, and 34 values obtained for alloyed wire yielded 2 = 0.086 ohm and 32 = 0.004 ohm. At the 0.01 level of significance, does this support the claim? Null hypothesis, H0 : p1 p2 = Alternative hypothesis, HA : p1 M > Level of significance = Critical region: z 2 test statistic = We should H0 in favour of HA. (Enter reiect or not reject) (1 point) A study shows that 23 of 275 tractors produced on one assembly line required extensive adjustments before they could be shipped, while the same was true for 15 of 359 tractors produced on another assembly line. Perform a hypothesis test at the 0.01 level of significance, to see if this data supports the claim that the second production line does superior work. Null hypothesis: P 1 p2 ( Enter '=', '>', or '', or '