12. Beth's scores on the six Earth science tests she took this semester are: 65, 72, 84, 85, 68, 100, 95, 55, 85, 75, 100
For this population, how many scores are within one standard deviation of the mean?
A)7
B) 5
C)6
D)4

Step-by-step explanation:

the answer is:

the correct option is the option b.

to calculate the surface area of the right cylinder, we need to use the following formula:

from the picture we know that:

so, substituting and calculting we have:

hence, we have that the correct option is the option b.

have a nice day!

i have no