The standard deviation of the weights of elephants is known to be approximately 15 pounds. We wish to construct a 95% confidence interval for the mean weight of newborn elephants. Fifty (50) newborn elephants are weighed. The sample mean is 244 pounds. The sample standard deviation is 11 pounds.
The standard deviation of the weights of elephants is known to be approximately 15 pounds. We wish to construct a 95% confidence interval for the mean weight of newborn elephants. Fifty (50) newborn elephants are weighed. The sample mean is 244 pounds. The sample standard deviation is 11 pounds.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:The standard deviation of the weights of
elephants is known to be approximately
15 pounds. We wish to construct a 95%
confidence interval for the mean weight
of newborn elephants. Fifty (50) newborn
elephants are weighed. The sample mean
is 244 pounds. The sample standard
deviation is 11 pounds.
Identify the following:
1.
a. x =
b. o =
c. n =
2.
Which distribution should you use
for this problem?
3.
Construct a 95% confidence
interval for the population mean weight
of newborn elephants. calculate the error
bound. State the confidence interval.
What will happen to the
confidence interval obtained, if 500
newborn elephants are weighed instead
of 50? Why?
4.
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