-34.68 - (-49.62) = -34.68 + 49.62 = 14.94 degrees warmer at the north pole
A. Let x be the cost of 1 raffle ticket
then -x (1199/1200) + (2000-x) (1/1200) = 0
-1199x/1200 + 2000 / 1200 - x/1200 = 0 -1200x / 1200 =- 2000/1200 x= $1.67
So your expected value per game is
-1.67(1199/1200)+1998.33(1/1200)=0
b. Since your random variable takes on only 2 values,
which is just the square of the standard deviation
(1998.33-1.67)^2(1/1200)(1199/1200) = 3319.44
Therefore, the answer is win about $0, give or take about $58.
Answer:
the answer is a) Y
Step-by-step explanation:
Answer:
x = -1, 2
Step-by-step explanation:
Step 1: Write out equation
(x - 2)(3x + 3) = 0
Step 2: Solve each individual root
x - 2 = 0
x = 2
3x + 3 = 0
3x = -3
x = -1
Step 3: Arrange from least to greatest
-1 < 2
So x = -1, 2