The median score for the final exam in a chemistry class was 75 ...

[ARLKQ]

The median score for the final exam in a chemistry class was 75 and 18 of the students received a grade greater than 80.
 
  If the test scores were normally distributed, what is the probability that a randomly selected exam had a score between 75 and 80?A) 68
  B) 32
  C) 80
  D) 50

Question 2

Initial estimates of the probabilities of events are known as:
 
  A) joint probabilities.
  B) posterior probabilities.
  C) prior probabilities.
  D) conditional probabilities.

[deja]

Answer to Question 1

B

Answer to Question 2

C

[ARLKQ]

TYSM

[daiying98]

Gracias!