Short Answer
Below you are given ages that were obtained by taking a random sample of 9 undergraduate students. Assume the population has a normal distribution.
40 42 43 39 37 39
a. What is the point estimate of μ?
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 41.8...View Answer
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Correct Answer:
Verified
b. 2.19
c. 38.20 to 41.8...
View Answer
Unlock this answer now
Get Access to more Verified Answers free of charge
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