Answer:
I guess you want to find the relative frequencies:
In total, we have 396,651 children
in sample 1, we have 198,747 children, and of those, only 37 developed the disease.
This means that the vaccine is not effective in:
p = 37/198,747 = 0.00019
For the placebo, we have a sample of 197,904 children in total, and 111 of them developed the disease, then we have a probability of the placebo not being effective is:
p = 111/197,904 = 0.00056
So we can see that the difference is significant, meaning that the placebo is not effective in more than twice the cases where the vaccine is not effective.
This looks like it’s more so 56 in for that 50%
Make x the subject means you need to solve for x
y = ax^2 solve for x
divide both side by a
y/a = ax^2/a
simplify
y/a = x^2
so
x = square root (y/a)
Answer:
54
Step-by-step explanation:
They are supplementary and add to 180 so subtract 126 from 180 and you get 54
Y decreases as x increases.