Answer:


And based on this the best answer would be:
a. mean = 4; standard deviation = 2.68
Step-by-step explanation:
For this case we have the following data given:
1,5,8,5,1
We can find the sample mean with the following formula:

And replacing we got:

And for the deviation (assuming that the correct approximation is the deviation for a population) we can calculate the deviation with the following formula:

And replacing we got:

And based on this the best answer would be:
a. mean = 4; standard deviation = 2.68
50 > = 15x....divide both sides by 15
50/15 > = x
10/3 > = x or x < = 10/3
so the correct solution set is : { x | x < = 10/3}...its the 2nd one
Is it just x=b-cd
If so
cd=b-x
÷d. ÷d
C=b-x/d
Answer:
$920
Step-by-step explanation:
800(1.15) = 920