Read the following scenarios For each scenario you need to d

Read the following scenarios. For each scenario you need to decide which of the following four methods is appropriate.

A. One sample t test

B. Paired samples t test

C. Independent samples t test

D. One-way analysis of variance (ANOVA)

1. An educator wants to test the hypothesis that average SAT score in the population is the same in Belgium, Denmark, and Netherlands.

2. Using random state-level household samples, a social scientist wants to know whether or not the mean household size is the same across 50 states in the U.S.

3. It has been claimed that average nursing salaries in Milwaukee, Wisconsin are lower than those in Pittsburgh, Pennsylvania. A medical professional wants to test this claim using a sample of salaries from the two cities.

4. A student government representative at a mid-sized East Coast university wants to test the mean difference in GPA at the beginning and end of the freshman year using a sample of 89 undergraduate students.

5. All employees in a firm have recently received professional development training that is designed to improve their productivity. The training provider claims that such training increases employee productivity by 10%. A firm manager has obtained estimates of change in productivity for 32 employees who received the training, and wants to test the training provider\'s claim.

Solution