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We draw a random sample of size 49 from the normal population with variance 3.8. If the sample mean is 12.3, what is a 99%
We draw a random sample of size 49 from the normal population with variance 3.8. If the sample mean is 12.3, what is a 99% confidence interval for the population mean?
Group of answer choices
a) [12.7816, 14.2184]
b) [11.7019, 13.2981]
c) [11.5827, 13.0173]
d) [12.8512, 14.1488]
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