a progressive function fitness strength training program using dumbless and to i
ID: 3244359 • Letter: A
Question
a progressive function fitness strength training program using dumbless and to improve upper and lower body strength. 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 dumbells and ankle weights was progressed over the 8 week training period. At the end, the two groups differed significantly in upp and lower body strength. We confluse that this finctin fitness training is a feasible and cost effective program to conduct in a group setting.
1) What is the independent and dependent variable? What are the level of measurements
2) What is the null hypothesis? What is the alternative hypothesis?
3) what type of statistical or research error (type 1 or 2) might the researchers have made regarding their findings? Explain.
4) what type of interentail statistical test would you have conducted to examine the strength at the end of the training program? explain.
Explanation / Answer
1) Independent Variable: Fitness strength training using dumbless
Level of Measurements: Two levels. People who are trained and people who are not trained.
Dependent Variable: Upper and lower body strength.
Level of Measurements: Two levels. Upper body strength and Lower body strength.
2) Null Hypothesis, H0: Group which received training and Group which didn't receive training don't differ in upper and lower body strength.
Alternative Hypothesis, H1: Group which received training and Group which didn't receive training differ in upper and lower body strength.
3) Type I error = Rej H0 | H0 is true = This error occurs when we conclude that the groups differ significantly in upper and lower body strength when actually they aren't.
Type II error = Fail to reject H0 | H0 is false = This error occurs when we conclude that the two groups don't differ significantly in upper and lower body strength when they actually differs.
4) We have to perform two-sample t-test to examine the strength at the end of training program.
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