4/5x-8=3
move -8 to the other side and add
4/5x=3+8
4/5x=11
move 5x to the other side and multiply
4=5x*11
4=55x
4/55=x
Answer:
Option A) 9604
Step-by-step explanation:
We are given the following in the question:
Confidence level = 95%
Standard error = 1%

Formula for sample size:


Putting values, we get,

Thus, the sample size must be
Option A) 9604
Answer:
2/17
Step-by-step explanation:
The problem wants to calculate the percentage error of the measurement of 7cm and if the measurement is uncertain we could use the formula of getting the error by margin of error over measurement time 100% and base on the data, the error would be if the margin error is 7.5 is 107 %. I hope you are satisfied with my answer