Answer:
Its C
Step-by-step explanation:
We have

Multiplying through by 1100,


Squaring (which means we need to check later),





Clearly there's no way that giant number would work; must be extraneous.
Answer: 3.94
Merry Christmas!
Well, we need to know how much was money the individual started with.
Answer: 
Step-by-step explanation:
As per given , we have
n = 11

Since population standard deviation is missing, so we use t-test.
Critical t-value for 99% confidence :
[using two-tailed t-value table]
Confidence interval :

Hence, 99% confidence interval for the mean amount of time that students spend in the shower each day.= 
Answer:
2 km east and 10 km north
Step-by-step explanation:
I did the activity and got the right answer.