Answer:
A. 1÷(X+1) (x-2)
some steps are directly
tag me in brainlist if you like it
Please i need help catching up, what is this? im giving out brainliest
1 answer:
You might be interested in
Answer:
7.10299
Step-by-step explanation:
is best evaluated in a calc.
Answer:
21
Step-by-step explanation:
Using<em> Simple Random Sampling</em>, we can estimate the sample size by the formula
where
n = sample size
Z = the z-score corresponding to the confidence level 99.5%
S = the assumed standard deviation = 3 seconds
e = margin of error = 2 seconds
<em>It is worth noticing that the higher the confidence level, the larger the sample should be. </em>
The z-score corresponding to a confidence level of 99.5% can be obtained either with a table or the computer and equals
Z = 3.023
Replacing the values in our formula
So the size of the sample should be at least 21.