raquelqueengucci25
05.08.2019 •
Mathematics
Construct a 95% confidence interval for the population mean, μ. assume the population has a normal distribution. a random sample of 16 lithium batteries has a mean life of 645 hours with a standard deviation of 31 hours
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Ответ:
Step-by-step explanation:
Given : Sample size : , which is a small sample (, 30) so we use t-test.
Sample mean :
Standard deviation :
Significance level :
Critical value :
The confidence interval for population mean is given by :-
Hence, a 95% confidence interval for the population mean =
Ответ:
idk
Step-by-step explanation: idk