Answer:
A = 1/625 or 0.0016
Step-by-step explanation:
Ask: Which two numbers add up to -12 and multiply to 32?
-8 and -4
Rewrite the expression using the above
<u>= (y - 4)(y - 8)</u>
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