Answer: Each peice of wood is equal to 0.625
Step-by-step explanation:
15/2 = 7.5
7.5/12 = 0.625
We have the following data set:
2,7,15,3,12,9,15,8,3,10
The range is the difference between the highest and lowest values in the set, to find the range, order the data set from least to greatest.
2,3,3,7,8,9,10,12,15,15
Then,

Mean is represented by the following expression:


Population variance formula looks like this:

Then, substituting:

For the standard deviation:
Answer:
b 120 cm
Step-by-step explanation:
Answer: Hi! I would say it is D because the other answers really don’t make sense. And the passages said that they were rated low for air quality.
Step-by-step explanation:
I hope this helps!