Answer:
Mean = 16.5
Variance = 35.55
Step-by-step explanation:
<u> x P(x) x. P(x) x² x². P(x)</u>
6 0.10 0.6 36 3.6
12 0.35 4.2 144 50.4
18 0.25 4.5 324 81
<u> 24 0.30 7.2 576 172.8</u>
∑x P (x) 16.5 ∑x² P (x) 307.8
The expected value of x E[X] gives the mean where X is the discrete random variable with the given probabilities.
Mean is given by E(X)= ∑x P (x) = 16.5
Similarly the variance is also calculated using the expected value of X and X².
Variance is given= E(X)²- [E(X)]²= 307.8- (16.5)²= 307.8-272.25 = 35.55
Answer:
given (0,0) and (12,y1)
the distance formula states taht
the distance between the points (x1,y1) and (x2,y2) is
D=
given
D=13
x1=0, y1=0
x2=12
square both sides
minus 144 both sides
sqrt both sides
+/-5=y2
the points are
(12,5) and (12,-5)
Step-by-step explanation:
Hi there hope it helps
1 gift box=26 dollar
1 cookie=1.50 dollar
Total amount of money=50 dollar
first she needs to buy a new gift box that is 50-26=24 dollar
then from 24 dollars she needs to buy cookies
you know that
1 cookie = 1.50 dollar
24/1.50=16x ≥ 16
= 27 + 45
Take 9 as a common,
= 9(3+5)
'cause 9 times 3 is 27 & 5 times is 45
In short, Your Answer would be Option C
Hope this helps!