Finding the null as well as alternative hypotheses

Question

Finding the null as well as alternative hypotheses for the given set of data.

Write the null as well as alternative hypotheses you would use to test the following situation.

5% of trucks of a certain model have needed new engines afterward being driven between 0 and 100 miles. The manufacturer optimisms that the redesign of one of the engine's components has solved this problem.

• H_O: p = 0.05
  H_A: p < 0.05
• H_O : p < 0.05
  H_A: p = 0.05
• H_O: p < 0.05
  H_A: p > 0.05
• H_O: p > 0.05
  H_A: p = 0.05
• H_O: p = 0.05
  H_A: p > 0.05