Statistics and Probability

Direction: Determine the parameter to be tested in each situation. 1. The television habits of children were observed and found out that the standard deviation is 12 4 hours per week. Answer 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 Answer: 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 Answer 4. Records of the Department of Health (DOH) revealed that 14 7% of the country's Filipino smokers have maintained their habit of smoking Answer V Direction: Determine what is asked in each problem as indicated by the blanks 1. A school principal claims that the Grade 1! students in her high school have a mean score of 92 Parameter Null Hypothesis: Claim: mean score of 92 Alternative Hypothesis Ha I # 92 2 A medicine company has manufactured and claimed that their medicine pill contains an average of 14mg of active ingredient Parameter: average Null Hypothesis: Claim: average of 14mg Alternative Hypothesis: 3. . According to a company. the mean pl level of the river water is 7.4. A researcher randomly selected 15 river water samples and found out that the mean is 6.7 with standard deviation of 0.24. Parameter: mean Null Hypothesis Claim: mean pl level of the water river is 7.4 Alternative Hypothesis