rachelmaddie
Full Member
- Joined
- Aug 30, 2019
- Messages
- 851
I need my work checked please.
Known:
Points: 50 75 150
Frequency: 55 32 13
Expected value of a random variable is its mean value. Find the mean value of points earned per turn from the table given.
Total number of turns = sum of frequencies
—> = 55 + 32 + 13 = 100
Total points earned = 50(55) + 75(32) + 150(13) = 7100
Expected value of points earned for a turn = Mean value of points = Total points/no. of turns
—> 7100/100 = 71
Solution: The game’s expected value of points earned for a turn is 71.
Known:
Points: 50 75 150
Frequency: 55 32 13
Expected value of a random variable is its mean value. Find the mean value of points earned per turn from the table given.
Total number of turns = sum of frequencies
—> = 55 + 32 + 13 = 100
Total points earned = 50(55) + 75(32) + 150(13) = 7100
Expected value of points earned for a turn = Mean value of points = Total points/no. of turns
—> 7100/100 = 71
Solution: The game’s expected value of points earned for a turn is 71.