Answer:
4.mean
Explanation:
Answer:
1.Mean, H u=92
2.H u=14, H u 14
3Average, H u<121
4.mean weight time is at most 8.7
5.H u=7.4 H u 7.4Activity 1. Fill Me! Directions: Determine what is asked in each problem as indicated by the blanks. 1. A school principal claims that the Grade 11 students in her high school have a mean score of 92. Parameter: Null Hypothesis: Claim: mean score of 92 Alternative Hypothesis: Ha: u 792 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. A certain product produced by a manufacturing company is supposed to weigh at least 12lbs. Parameter: Null Hypothesis: Ho: 1 2 121 Claim: weigh at least 12lbs Alternative Hypothesis: 4. The Bureau of Internal Revenue claims that the mean wait time for taxpayer during a recent tax filing is at most 8.7 minutes. A random sample of 11 taxpayers has a mean wait time of 8.7 minutes and a standard deviation of 2.7 minutes. Is there enough evidence to reject the claim at a significance level of 0.10? Parameter: mean Null Hypothesis: Claim: Alternative Hypothesis: Ha: u > 8.7 5. According to a company, the mean pH 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 Claim: mean pH level of the water river is 7.4 Null Hypothesis: Alternative Hypothesis
