Answer:
c
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
Answer:
D. 14.32
Step-by-step explanation:
The formula for standard deviation is:

The mean μ is 33.
The (x minus μ) squared are 361, 49, 49, 361 respectively.
So that the SD = 
The mean remains the same
Answer: The 3rd equation is a true proportion
Brainliest please! <3