For the ages in Exercise 7: a) Construct a 95% confidence interval for the mean age of
Question:
For the ages in Exercise 7:
a) Construct a 95% confidence interval for the mean age of all customers, assuming that the assumptions and conditions for the confidence interval have been met.
b) How large is the margin of error?
c) How would the confidence interval change if you had assumed that the standard deviation was known to be 10.0 years?
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a To find the confidence interval use 3184 2064 984 25 The 95 confidence ...View the full answer
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Related Book For
Business Statistics
ISBN: 9780321925831
3rd Edition
Authors: Norean Sharpe, Richard Veaux, Paul Velleman
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