Answer:
125 times.
Step-by-step explanation:
Prob(Heads) = 1/2.
Prob(Spinner lands on 2) = 1/4 ( as there are 4 sections on the spinner).
So the best prediction for the number of times this occurs in a 1000 trials
= 1/2 * 1/4 * 1000
= 1/8 * 100
= 125 times.
So, the equation to solve then is: 0.3 x=100
Solving for x, we get x=100 /0.3
or x, we get x=333.333333
This means, 100 is 30 % of 333.333333
Combine like terms.
1w - 0.25w = 0.75w
Hope this helps!
Answer:
2.25
Step-by-step explanation:
The total frequency is:
20 + 12 + 6 + 2 = 40
Calculate the probability of each score:
P(X=3) = 20/40 = 0.50
P(X=2) = 12/40 = 0.30
P(X=1) = 6/40 = 0.15
P(X=0) = 2/40 = 0.05
So the expected value is:
E = (3)(0.50) + (2)(0.30) + (1)(0.15) + (0)(0.05)
E = 2.25
Answer:
C
Step-by-step explanation:
Notice how the angles look the same, but if we look at the base of our second house, it's value is triple that of the first house. Therefore, we can infer that the other values must be triple the size, as well. Thus, multiplying our values of the first house, we get answer C!
Hope this helped!
