Answer:
s = 22t or , when s is students and t is teachers.
Step-by-step explanation:
I. Given t = teacher, s = student
When 1 teacher per 22 students so...
s = 22t
If there're 10 teachers
s = 22(10)
= 220 or
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Answer:
The margin of error is multiplied by
Step-by-step explanation:
margin of error (ME) from the mean can be calculated using the formula
ME= where
- z is the corresponding statistic of the given confidence level
- s is the standard deviation of the sample (or of the population if it is known)
- N is the sample size
Since margin of error is proportional with inverse of ,
if we cut the sample size in half, the margin of error is multiplied by .