Mathematics · Business Statistics and Research Methods
A population has a mean of 200 and a standard deviation of 50. If a simple random sample of size 100 is selected, what is the probability that the sample mean will be within ±5 of the population mean?
- 10.6826✓
- 20.9544
- 30.6928
- 40.7523
Correct answer
0.6826
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