Answer:
Yeesh it was a 3
Step-by-step explanation:
10% of 30=.10 x 30
Answer is 3
Answer:
14 more hours
Step-by-step explanation:
Answer:
proportional relationship
Step-by-step explanation:
its proportional because it crosses through the axis :3
Answer:
Step-by-step explanation:
maybe 8 or 1/9
Answer:
B. 97
Step-by-step explanation:
We have that to find our
level, that is the subtraction of 1 by the confidence interval divided by 2. So:

Now, we have to find z in the Ztable as such z has a pvalue of
.
So it is z with a pvalue of
, so 
Now, find M as such

In which
is the standard deviation of the population and n is the size of the sample.
How many students should be sampled to be within 1 drink of the population mean with 95% probability?
This is n when 
We know from preliminary studies that the standard deviation is around 5, so 





We round up, so the correct answer is:
B. 97