No, these do not always forma unique triangles because it depends on what size your sides are because if you have 3 sides of the same length then that’s a equilateral and if you have two sides of the same length and one side that’s not then that would be an Isosceles triangle and if you had no sides of the same length then that would be a scalene triangle.
Answer:
A.
Step-by-step explanation:
Hello!
First a little reminder:
The p-value is defined as the probability corresponding to the calculated statistic if possible under the null hypothesis (i.e. the probability of obtaining a value as extreme as the value of the statistic under the null hypothesis).
In the example, the results of a drug test were reported, being the null hypothesis "the drug has no effect" and the alternative hypothesis "the drug decreases vision loss in people with Macular Degeneration"
After conducting the test, the researchers obtained the p-value 0.004
Taking the previous definition of the p-value, the correct answer is A.
To tell whether B. and C. are correct or incorrect there should be specified what signification level was used in the analysis. Remember, the p-value is the probability of the statistic value under the null hypothesis and to use it to make a decision ver the null hypothesis you have to compare it with the signification level. If the p-value is greater than the level of significance, then you don't reject the null hypothesis (Then you can conclude that the drug has no effect) If the p-value is equal or less than the level of significance, then you reject the null hypothesis. (Then you can conclude that the drug decreases the vision loss)
Using a level of signification of 0.01 then the decision is to not reject the null hypothesis but with levels of 0.05 or 0.1 then the decision is to reject it. This is why it is important to know what level of significance was used in the test when interpreting the p-value.
I hope it helps!
The parabola that open to right or left has y terms as squared term and the general equation with vertex (h, v) of such a parabola can be written as:
![x=a(y-v)^{2}+h](https://tex.z-dn.net/?f=x%3Da%28y-v%29%5E%7B2%7D%2Bh%20)
The sign of a determines if the parabola opens right or left. For positive a, the direction of parabola is towards right and for negative a it is towards left.
So the correct answer is option B