15/20 = 0.75
Each of the gift boxes will get 3/4 yard of ribbon. (.75)
Answer:
C
Step-by-step explanation:
C is congruent to A
Answer:
We need an SRS of scores of at least 153.
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 large an SRS of scores must you choose?
This is at least n, in which n is found when . So
Rounding to the next whole number, 153
We need an SRS of scores of at least 153.
Answer:
11.1
Step-by-step explanation:
i just did the math and that came out