![subject](/tpl/images/cats/mat.png)
Mathematics, 10.04.2020 05:00 meiyrarodriguez
Hi please write what's in the comments as the answers! I want people to know the answers!! Tai Chi is often recommended as a way to improve balance and flexibility in the elderly. Below are
before-and-after flexibility ratings (on a 1 to 10 scale, 10 being most flexible) for a random sample of 8 men in their 80's who took Tai Chi lessons for six months.
Subject A B C D E F G H
Flexibility rating after Tai Chi 2 4 3 3 3 4 5 10
Flexibility rating before Tai Chi 1 2 1 2 1 4 2 10
(a) Explain why these are paired data.
(b) Calculate and interpret the mean difference.
(c) Researchers would like to know if the true mean difference (after-before) in flexibility rating for men in their 80's who take Tai Chi lessons for 6 months is greater than zero. The P-value of this test is 0.004. Interpret this value.
(d) If the result of this study is statistically significant, can you conclude that the difference in the mean flexibility rating was caused by the Tai Chi lessons? Why or why not?
![ansver](/tpl/images/cats/User.png)
Answers: 2
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 16:00
You use math in day-to-day routines when grocery shopping, going to the bank or mall, and while cooking. how do you imagine you will use math in your healthcare career?
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 21:00
X+y=-4 x-y=2 use elimination with adding and subtraction
Answers: 3
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 22:00
Prove sin2a + cos2a - 1 / sin2a + cos2a + 1 = 1 - tana / 1 + cota
Answers: 2
You know the right answer?
Hi please write what's in the comments as the answers! I want people to know the answers!! Tai Chi i...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 09.09.2021 17:20
![question](/tpl/images/cats/mat.png)
Mathematics, 09.09.2021 17:20
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 09.09.2021 17:20
![question](/tpl/images/cats/en.png)
English, 09.09.2021 17:20
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 09.09.2021 17:20
![question](/tpl/images/cats/mat.png)
Mathematics, 09.09.2021 17:20
![question](/tpl/images/cats/pravo.png)
![question](/tpl/images/cats/fizika.png)
Physics, 09.09.2021 17:20
![question](/tpl/images/cats/mat.png)
Mathematics, 09.09.2021 17:20
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/en.png)
English, 09.09.2021 17:20
![question](/tpl/images/cats/mat.png)
Mathematics, 09.09.2021 17:20
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/en.png)
English, 09.09.2021 17:20