Answer: C.-1.5
Step-by-step explanation:
Given: The burning time of a very large candle is normally distributed with mean
of 2500 hours and standard deviation
of 20 hours.
Let X be a random variable that represent the burning time of a very large candle.
Formula: 
For X = 2470

So, the z-score they corresponds to a lifespan of 2470 hours. =-1.5
Hence, the correct option is C.-1.5.
Answer:
5<x<11
Step-by-step explanation:
Answer:
16
Step-by-step explanation:
8 × 4 = 32
32 × 1/2 = 16
Hope this helps <3
Number one or 2? so i can help you
X= 105
explanation:
45+30=75
180-75= 105