Answer:
d = 2√3
Step-by-step explanation:
Answer:
Im not entirely sure this is right but
0 = tan^-1(20 ÷ 25)
0 ≈ 38.65°
hope i helped lol
Answer:
She can play 7 games
Step-by-step explanation:
Substrate 4 from 25
Answer and Step-by-step explanation: The null and alternative hypothesis for this test are:
![H_{0}: s_{1}^{2} = s_{2}^{2}](https://tex.z-dn.net/?f=H_%7B0%7D%3A%20s_%7B1%7D%5E%7B2%7D%20%3D%20s_%7B2%7D%5E%7B2%7D)
![H_{a}: s_{1}^{2} > s_{2}^{2}](https://tex.z-dn.net/?f=H_%7Ba%7D%3A%20s_%7B1%7D%5E%7B2%7D%20%3E%20s_%7B2%7D%5E%7B2%7D)
To test it, use F-test statistics and compare variances of each treatment.
Calculate F-value:
![F=\frac{s^{2}_{1}}{s^{2}_{2}}](https://tex.z-dn.net/?f=F%3D%5Cfrac%7Bs%5E%7B2%7D_%7B1%7D%7D%7Bs%5E%7B2%7D_%7B2%7D%7D)
![F=\frac{1.26^{2}}{0.93^{2}}](https://tex.z-dn.net/?f=F%3D%5Cfrac%7B1.26%5E%7B2%7D%7D%7B0.93%5E%7B2%7D%7D)
![F=\frac{1.5876}{0.8649}](https://tex.z-dn.net/?f=F%3D%5Cfrac%7B1.5876%7D%7B0.8649%7D)
F = 1.8356
The <u>critical value of F</u> is given by a F-distribution table with:
degree of freedom (row): 20 - 1 = 19
degree of freedom (column): 20 - 1 = 19
And a significance level: α = 0.05
= 2.2341
Comparing both values of F:
1.856 < 2.2341
i.e. F-value calculated is less than F-value of the table.
Therefore, failed to reject
, meaning there is <u>no sufficient data to support the claim</u> that sham treatment have pain reductions which vary more than for those using magnets treatment.