Step-by-step explanation:
F(2)=3(2)²-7
=5
................
Answer:
The need to sample 76 days.
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 the margin of error M as such
In which 
is the standard deviation of the population and n is the size of the sample.
How many days do they need to sample
We need to sample n days.
n is found when M = 300.
We have that 
So
Rounding up
The need to sample 76 days.
Answer:
Like the angles BAC (56°) and BDC has the same arc BC in the circumference, these angles must be congruent, then angle BDC must be equal to 56°.
Answer:
1. studied: range-21
interquartile-10
did not: range-46
interquartile-19.5
2.The people who studied got closer grades to each other. This shows that those who didn't study had more variation in grades. So there if you don't study you have a bigger chance of failing than studying.
Step-by-step explanation:
I'm not sure! Let me think about it, and if I get something then I will let you know!!! ;D
