45-2x(15-3) I need help finding out the answer to this problem because the answer I got I think it is wrong
1 answer:
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Let's say that x is the number of days he tweets. Now, if he tweets any number of days, we can represent all of that with just x. So out expression will look like:
Hope this helps!
Answer:
The minimum sample size required is 5,499 computer users.
The major obstacle is that it is a big sample size if it is a small organization wanting to perform it.
Step-by-step explanation:
We need to calculate a sample size in order to have 95% confidence interval with 12 minutes of witdth.
So, we have that the difference between the upper limit and the lower limit is 12:
For a 95% CI, the value of z is 1.96. The standard deviation is 227.
The minimum sample size required is 5,499 computer users.
