Take the number of medium ducks and divide it by the overall number of ducks
13/65=.2
The answer is the first one, A
Answer: 0.9738
Step-by-step explanation:
We assume that the scores follows a normal distribution.
Let
denotes the class average .
As per given we have,

Sample size : n= 12
The probability that a class of 15 students will have a class average greater than 70 on Professor Elderman’s final exam will be :

Hence, the correct answer = 0.9738
Answer:
For number one the 3.75 oz container for $9.75 would be the better deal
For number two the answer is 6 1/4