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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Assume that the license plate should has the sequence of two letters followed by 4 digits, or 3 letters followed by 3 digits. Find number of different license plated can be made?
Assume we want 90% confidence interval for average amount of time (in minutes) spent per week on homework by students in large introductory statistics course at the large university.
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A researcher wishes to know, with 98% confidence, the percentage of women who wear shoes which are too small for their feet. A previous study conducted by Academy of Orthopedic Surgeons found that 80% of women wear shoes that are too small for the
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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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