I think it’s either D or A,
So sorry if I’m wrong
The formula to find the x coordinate is -b/2a. If you plug in the variables
-5/2(2) = -5/4 = -1.25
x = -1.25
Now plug in x into the y equation.
y = <span>-11.125</span>
Answer:
Probability that the proportion in our sample of red candies will be less than 20% is 0.5 .
Step-by-step explanation:
We are given that 20% of the candy produced are red. A random sample of 100 bags of Skittles is taken.
The distribution we can use here is;
~ N(0,1)
where, p = 0.20 and n = 100
Let
= proportion of red candies in our sample
So, P(
< 0.20) = P(
<
) = P(Z < 0) = 0.5
Therefore, probability that the proportion in our sample of red candies will be less than 20% is 0.5 .
Place value helps you divide a number in the thousands by being able to divide the number up into tens. making the problem easier