Answer:
Z = -1.60
it is low ... it appears that for this problem 2 standard deviations below must be reached to be considered "unusual"
Step-by-step explanation:
Answer:
-50
Explanation:
At sea level would be 0 so anything above would be a positive number and anything below a negative number.
Answer: 20/63
Step-by-step explanation:
- The probability that the first marble is red is 16/28.
- The probability that the second marble is red is 15/27.
Multiplying these probabilities, we get (16/28)(15/27) = 20/63