Answer:
The mean of X is 2
Step-by-step explanation:
Given the data in the question;
set of 10 cards consist of 5 red card and 5 blacks
cards are chosen, replaced and shuffled four times;
number of independent trials n = 4
now, since its is replaced, the probability of getting a red card in each trial will be;
p = 5/10 = 0.5
let X rep the number of red cards observed in the four trials.
the random variable follows binomial distribution where
n = 4 and p = 0.5
so
E(X) = ∑xP( X = x )
E(X) = np
we substitute
E(X) = 4 × 0.5
E(X) = 2
Therefore, The mean of X is 2
D. 46.66 units is the answer
The equation would be 28-2.50x since it's 2.50 per ride, you would be able to ride 11 rides total
Answer: what picture
Step-by-step explanation:
Answer:
72 People
Step-by-step explanation:
Find out what is 35% of 360 is (126)
Find out what is 45% of 360 is (162)
Add the two numbers (288)
Subtract from 360 (72)