Last questions, thanks for everything
There are 21 plates of tomato sandwiches, 27 plates of cheese sandwiches, and 12 plates of beef sandwiches on a buffet table.
If a guest randomly picks a single plate, what is the probability that he gets tomato or cheese sandwiches?
A)0.10
B)0.25
C)0.48
D)0.80
D?
Left-handed batters
Freshmen: 4
Sophomore: 6
Junior: 5
Senior: 4
Right-handed batters
Freshmen: 13
Sophomore: 10
Junior: 11
Senior: 12
A)11/65 <- OR THIS ONE BECAUSE ITS ONLY 11 JUNIORS THAT ARE RIGHTHANDED
B)14/65
C)16/65 <--- 5(J)+11(RH) = 16
D)51/65
Am I correct.. I believe the second one is A 11/65
To find the probability that a guest randomly picks a plate of tomato or cheese sandwiches, we need to determine the total number of plates of tomato and cheese sandwiches and divide it by the total number of plates on the buffet table.
The number of plates of tomato sandwiches is 21, and the number of plates of cheese sandwiches is 27. To find the total number of plates of tomato or cheese sandwiches, we simply add these two numbers together: 21 + 27 = 48.
Next, we need to find the total number of plates on the buffet table. The number of plates of tomato sandwiches (21), cheese sandwiches (27), and beef sandwiches (12) can be added together to get the total number of plates: 21 + 27 + 12 = 60.
Now, we can calculate the probability by dividing the total number of plates of tomato or cheese sandwiches (48) by the total number of plates on the buffet table (60): 48/60 = 0.8.
So, the probability that the guest randomly picks a plate of tomato or cheese sandwiches is 0.8.
Therefore, the correct answer is D) 0.80.
For the second question about left-handed batters, we need to calculate the probability that a randomly chosen batter is a right-handed junior.
The number of right-handed juniors is 11, and the total number of batters is the sum of the right-handed batters for each grade: 13 + 10 + 11 + 12 = 46.
Therefore, the probability is 11/46.
None of the provided options match this probability, so the correct answer is not listed.