10. Read the following paragraph and then answer the next two questions. A progressive functional fitness strength training program using dumbbells and ankle weights was developed to improve upper- and lower-body strength of residents living in an assisted-living facility. Fifty people were trained and 50 people were not trained. Five upper-body and five lower-body strength exercises were performed in a group setting 3 times per week for 30 minutes. Resistance of the dumbbells and ankle weights was progressed over the 8- week training period. At the end of the training, the two groups differed significantly in upper- and lower-body muscular strength. We conclude that this functional fitness strength training program is a feasible and cost-effective program to conduct in a group setting. a. Identify the independent and dependent variables in the study. b. What type of statistical or research error might the researchers have made (if any)? Explain. 11. A researcher is interested in testing the relationship between the amount of physical activity one gets and the development of heart disease (HD). Answer the following three questions about the investigator's study. a. What are the investigator's research and null hypotheses? b. What are the investigator's independent and dependent variables? c. Assume the investigator makes an error of the second type (i.e., a type II error). What did the investigator do to make this error?