Answer: a. $128.125
Step-by-step explanation:
The standard error of the mean is given by :
, where
= population standard deviation , n= sample size.
Given: 
n= 256
Then, the standard error of the mean:-

Hence, option a. is correct.
Hey there! :D
Make an algebraic expression.
Let the 'number' equal x.
4x-24= 60
Add 24 on both sides.
4x= 84
Divide both sides by 4.
x=21
The number is 21.
I hope this helps!
~kaikers
Answer:
94.2 yards
Step-by-step explanation:
1st path = d = 120 yards
c= pie d
c= 376.8 yards
2nd yard = r = 45 yards
c = 2 pie r
c = 2(3,14)(45)
c = 282.6 yards
then subtract yard 1 and yard 2 to get 94.2 yard
ANSWER :94.2 yards
Answer:
About 23 minutes.
Step-by-step explanation:
8 miles is approximately 12.9 kilometers, so you would need to do the equation 12.9/1 = 5/x, which gives you the percentage of an hour you need, and then convert that to minutes by multiplying by 60.
A, it's not fair because the chance to lose points far outweighs the chance to gain points