Question

1. The null hypothesis for a one-way ANOVA states that ______.

          a. all of the population means are different from each other

          b. at least one of the population means is different from the others

          c. there are no differences between any of the population means

          d. either b or c

2. Before running a one-way ANOVA, researchers should consider a set of assumptions. Which of the below statements is NOT one of the assumptions of the ANOVA?
   1. The variance being measured is normally distributed
   2. The variances of the groups assessed are equivalent
   3. Each sample is independent
   4. The degrees of freedom of the groups are the same
3. A study revealed a positive relationship between the number of speeding tickets drivers receive and their number of car accidents. It means that

1. in general, those who get more tickets, get into car accidents more often
2. inn general, drivers who speed are less likely to get into a car accident.
3. speeding may be a positive thing, since it leads to fewer accidents
4. none of the above statements is correct

4. If the coefficient of determination obtained as a result of measuring the relationship between life satisfaction and salary is .09 then

1. 81% of the variability in life satisfaction is accounted for by variability in salary.
2. 9% of the variability in life satisfaction is accounted for by variability in salary.
3. 90% of the variability in life satisfaction is accounted for by variability in salary.
4. 0.0081% of the variability in life satisfaction is accounted for by variability in salary.

Answer 1