Can you help me determine what type of test/technique to do to solve the below questions?

Many parts of cars are mechanically tested to be certain that they do not fail prematurely. In an experiment to determine which one of two types of metal alloy produces superior door hinges, 40 of each type were tested until they failed. Car manufacturers consider any hinge that does not survive 1 million openings and closings to be a failure. The number of openings and closings as observed and recorded in the accompanying table (to the closest 0.1 million). A statistician has determined that the number of openings and closings is normally distributed.

+ Number of openings and closings Alloy 1 Alloy 2 1.5 1.5 0.9 1.3 1.4 0.9 1.3 0.8 1.8 1.6 1.3 1.5 1.3 1.3 0.9 1.4 1.6 1.2 1.2 1.8 0.7 1.2 1.1 0.9 1.3 0.9 1.5 1.6 1.2 0.8 1.2 1.1 1.2 1.3 1.4 1.4 0.8 0.7 1.1 1.4 1.1 1.5 1.1 1.5 1.1 1.4 0.8 0.8 1.3 0.8 0.8 1.1 1.3 1.1 1.5 0.9 1.1 1.6 1.6 1.3 1.4 1.2 1.3 1.6 0.9 1.4 1.7 0.9 0.6 0.9 1.8 1.4 1.1 1.3 1.9 1.3 1.5 0.8 1.6 1.3