When COVID put everyone in quarantine, people had to figure out new ways to exercise. Some people turned to Virtual Real
Posted: Wed May 04, 2022 12:42 pm
When COVID put everyone in quarantine, people had to figure out
new ways to exercise. Some people turned to Virtual Reality
headsets to play high-intensity fitness games like Beat Saber, and
they couldn’t shut up about their results (for reals, y’all, super
fun and I lost 25 pounds). To explore the science behind these
claims, Dr. Fit ran a simple study asking out-of shape adults to
play Beat Saber for 30 minutes a day, three times a week for a
month, without changing anything else (their diet stayed the same).
She measured their weights before and after. Did this exercise
routine have a significant effect on weight? SSD = 414. Subject
Baseline (X1) After 1 month of Beat Saber (X2)
subj. x1 x2
1 165 171
2 250 246
3 215 198
4 190 193
5 200 192
a. State your hypotheses in notation (two-tailed) and set
criteria for rejection of the null (a=.05). b. Calculate the test
statistics (I gave you the SSD above, so you don’t need to
calculate it; show ALL other work with appropriate notation – if
long decimals are involved, maintain 3 decimals in your formulas).
State whether or not you can reject the null. You do not need to
calculate effect sizes. c. Write an interpretation in APA format as
discussed in class to summarize what you’ve found. Round to 3
decimals when reporting stats.
new ways to exercise. Some people turned to Virtual Reality
headsets to play high-intensity fitness games like Beat Saber, and
they couldn’t shut up about their results (for reals, y’all, super
fun and I lost 25 pounds). To explore the science behind these
claims, Dr. Fit ran a simple study asking out-of shape adults to
play Beat Saber for 30 minutes a day, three times a week for a
month, without changing anything else (their diet stayed the same).
She measured their weights before and after. Did this exercise
routine have a significant effect on weight? SSD = 414. Subject
Baseline (X1) After 1 month of Beat Saber (X2)
subj. x1 x2
1 165 171
2 250 246
3 215 198
4 190 193
5 200 192
a. State your hypotheses in notation (two-tailed) and set
criteria for rejection of the null (a=.05). b. Calculate the test
statistics (I gave you the SSD above, so you don’t need to
calculate it; show ALL other work with appropriate notation – if
long decimals are involved, maintain 3 decimals in your formulas).
State whether or not you can reject the null. You do not need to
calculate effect sizes. c. Write an interpretation in APA format as
discussed in class to summarize what you’ve found. Round to 3
decimals when reporting stats.