Answer:
Hope this helps!
Step-by-step explanation:
It said "no association between this dude winning and loss in harsh condition"
now look at harsh condition, total is 20, since there is no association that means they are the same, which is 10 and 10
WIN column total is 168, 158 for normal condition, 10 for harsh condition, adds up to 168.
LOSS column total is 72, 62 for normal condition and 10 for harsh condition, adds up to 72.
if u wana check if it adds up with Normal Condition, 62 plus 158 is 220.
checked, complete, this is david signing off
<span>1800 = -3p^2+70p+988
0 = -3p^2+70p - 812
Using the discriminant means taking the section of the quadratic formula:
âšâ€‹(b^2)â’4ac
And by plugging in the values of our formula we get:
âšâ€‹(70^2)â’4*-3*-812
Which yields:
âšâ€‹4900 â’ 9744
Since this is a square root of a negative number, it says there is no real solution for the formula, which makes sense because the formula is a quadratic that is pointing downwards (a = -3p^2) and underneath the number line (c = -812).
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68% will be 1 standrd deviation either side of the mean so a reasonable estimate will be (25*0.68) / 2 = 8.5
