Calculate the confidence intervals for population mean
Assume that for sample of n=11 measurements, we find out that (xbar=72) and s=5. Suppose normality, calculate the confidence intervals for population mean U with the following levels of confidence:
a. 95%
b. 99%
c. 80%
d. 90%
e. 98%
f. 99.8%
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A laser beam in the air is incident on a liquid at an angle of around 38.0 degrees with respect to the normal. The angle of laser beam in the liquid is 27.0 degrees. Find out the liquid's index of refraction?
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