Essay
Below you are given ages that were obtained by taking a random sample of 9 undergraduate students. Assume the population has a normal distribution.
a.What is the point estimate of ?
b.Determine the standard deviation.
c.Construct a 90% confidence interval for the average age of undergraduate students.
d.Construct a 99% confidence interval for the average age of undergraduate students.
e. Discuss why the 99% and 90% confidence intervals are different.
Correct Answer:
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a.40
b.2.19
c.38.20 to 41.80 (...View Answer
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Correct Answer:
Verified
b.2.19
c.38.20 to 41.80 (...
View Answer
Unlock this answer now
Get Access to more Verified Answers free of charge
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