1. The Department wants to know if the average working hours in preparing a full meal is 3 hours. Ho: Ha: 2. A researcher claims that the average salary of an engineer in the Philippines is more than...

Formulate the null and alternative hypothesis of the following statements in words and numbers.


Extracted text: 1. The Department wants to know if the average working hours in preparing a full meal is 3 hours. Ho: Ha: 2. A researcher claims that the average salary of an engineer in the Philippines is more than P50,700. A sample of 60 engineers was selected and found that their mean salary is P41,000 with a standard deviation of P5,000. Is there sufficient evidence to support the claim of the researcher at 0.05 level of significance? Ho: Ha: