Directions: Determine the parameter to be tested in each situation Translate it into symbols.

1. The television habits of children were observed and found out that the standard deviation is 12.4 hours per week.

2. A newspaper article stated that students in the country take an average of 4 years to finish their undergraduate degrees. Suppose that you believe the mean time is longer, you conducted survey on 49 students. The result obtained a sample mean of 5 with a sample standard deviation of 1.2.

3. According to DOLE, registered nurses in government earned an average monthly salary of P9,700. For that same year, a survey was conducted on 41 registered nurses to determine if the mean salary is higher than the previous survey. The sample average was P10,000 with a sample standard deviation of P2,500.

4. Records of the Department of Health (DOH) revealed that 14.7% of the country's Filipino smokers have maintained their habit of smoking.