Answer:
75/5=15
64/4=16
Andrea has a higher babysitting rate by $1
Step-by-step explanation:
Answer:
bottom right one
Step-by-step explanation:
A. How many different selections are possible?
B. What is the probability of winning?
C. If you win, what is your net profit?
D. Find the expected value
Answer :
A. sequence of three digits (from 0 to 9). so 10 numbers.
We know 3 lottery games. So possible selections = 10^3 = 1000
B. Probability of winning = one outcome / total outcomes
P( winning) =
= 0.001
c. Net profit = winning amount - paid amount
= 384.13 - 1.33 = $382.8
D. expected value
E(x) = net profit * winning probability - paid amount * lost probability
E(x) = 382.8 * 0.001 - 1.33 * 0.999 = -0.95
you expect to lose 95 cents per ticket.
Answer:
I provided a full answer and explaination in the picture attached. Good luck.
The error made was in step two because you do not add 1 and 48, you subtract. this would result in "no solution" since you can't find the square root of a negative number