Formular for line graph is
Find the gradient first
Substitude the gradient to the formular
∴ m=8h is the equation of the graph.
Answer is C.
1. The results are nowhere near to being statistically significant.
2. The results are almost but not quite statistically significant.
3. The results are just barely statistically significant.
4. The results are strongly statistically significant.
A group of 10 people is choosing a chairperson and vice-chairperson. They put all 10 people's names into a hat. The first name drawn becomes chair. The second name drawn becomes vice-chair. How many possible combinations of chair and vice-chair are there?
1. 19
2. 90
3. 100
4. 10! (10 factorial)
The distribution of means is the correct comparison distribution when
Answer: The distribution of means is the correct comparison distribution when there is more than one person in a sample.
The distribution of the sample means is also called the sampling distribution of mean. It is most appropriate when we take a random sample of size n from the population of size N. The distribution of the sample means will follow normal distribution with mean = 
and standard deviation = 
