Answer:
Mean = 1.9
Standard deviation = 0.6
Step-by-step explanation:
The Mean is calculate by the formula:

⇒ 
Thus Mean to the nearest tenth is 1.9
Standard Deviation is the square root of sum of square of the distance of observation from the mean.
where,
is mean of the distribution.
Putting all values in the formula, We get
Standard Deviation = 0.597 ≈ 0.6
Hope this helps! I can resubmit if my hand writing is too bad.
Answer:
Step-by-step explanation:
100% means all of 40.
So 100% of 40 is 40
Let me see a better picture
Answer:
A) 2x+5y
Step-by-step explanation:
I took the test.