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:
966/zr.
Step-by-step explanation:
We are given that xz = 46 and wr = 21.
Therefore w = 21/r and x = 46/z.
Therefore wx = (21*46)/ zr
= 966/zr.
Answer:
B
Step-by-step explanation:
negative 4 means that the 7 is being removed 4 times.
Answer: C. -102 + (-25.5)
The answer is F because my brother is in high school and he knows the's things
