SOLVE THIS: with solution plss
_the answer is n=107 with solution_
Carlos wants to replicate a study where the highest lowest observed value is 13.8 while the lowest is 13.4. He wants to estimate the population mean u to the margin of error of 0.025 of its true value. Using 99% confidence level, find the sample size n that he needs.
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Answer:
Answer= 107
Step-by-step explanation:
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Answer:
Solution:
The confidence level is 99%. So, a = 0.01. Therefore, Za/2
-2.58.
The desired error is 0.025. Since the range R = 12.8 - 12.4 = 0.4, then
O=0.4/4 = 0.1.
Substituting the values in the equation for getting sample size, we have
n =
= (tapes
= [)
(2.58)
n-
0.025
0.258
2
N =
0.025
n = (10.32)
n = 106.5
Round up 106.5 to 107. So the required sample size is 107.