The answer is B, g is the total number of games
Answer:
c.
Step-by-step explanation:
1. 5 2/3 = 5 4/6
a. 2 x 2 = 4
b. 3 x 2 = 6
2. 5 4/6 - 4 1/6 = 1 3/6 = 1 1/2 = a
a. 4/6 - 1/6 = 3/6 = 1/2
b. 5 - 4 = 1
c. a = 1 1/2
Answer:
E(F)=200
V(F)=100
Step-by-step explanation:
(a) Let F be the amount he spends on falafel sandwiches over the next 400 days. Find E[F] and V(F).
If we analized his expenses in falafel sandwiches, we know he buys a $1 sandwich with aprobability of 50%.
If we call the random variable D the daily expense in falafel sandwiches, it is a Bernoulli variable with p=0.50.
If F is the sum of the daily expenses D during the 400 days, then we can say it is a binomial variable with p=0.5 and n=400.
Then we can calculate the expected value of F as:
The variance of F is then
256.5 cm2 / 27 cm2 = 9.5cm
9514 1404 393
Answer:
D. 210
Step-by-step explanation:
If b is the number of boys in the choir, the ratio of boys to girls is ...
b/150 = 7/5
b = 150(7/5) = 30(7) = 210
There are 210 boys in the choir.