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You said x/20 = 12/16
Multiply each side by 20 : x = 20 x 12/16
= 240 / 16 = 15 .
Answer:
Is there supposed to be a picture?
Step-by-step explanation:
Answer:
a) 752 medical files should be included.
b) 372 medical files should be included.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of , we have the following confidence interval of proportions.
In which
z is the z-score that has a p-value of .
The margin of error is of:
90% confidence level
So , z is the value of Z that has a p-value of , so .
Question a:
This is n for which M = 0.03. We have no estimate, so we use . So
Rounding up:
752 medical files should be included.
Question b:
Now we have that:
So
Rounding up:
372 medical files should be included.
Answer:
About 158 students in the district participate in the school music program.
Step-by-step explanation:
394(2/5)=788/5=157.6
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