The airport is planning the budget for the following year and needs to estimate the cost for security. Over the course of a 30 day month (n=30) the man hours needed is roughly 350 with a mean of 10 hours a day and a standard deviation of .4 hours. Construct a 90% and 95% confidence interval? Interpret the confidence interval in your own words. What would happen to the confidence interval if you used a 99% interval?
The airport is planning the budget for the following year and needs to estimate the cost for security. Over the course of a 30 day month (n=30) the man hours needed is roughly 350 with a mean of 10 hours a day and a standard deviation of .4 hours. Construct a 90% and 95% confidence interval? Interpret the confidence interval in your own words. What would happen to the confidence interval if you used a 99% interval?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 26PFA
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The airport is planning the budget for the following year and needs to estimate the cost for security.
Over the course of a 30 day month (n=30) the man hours needed is roughly 350 with a
of 10 hours a day and a standard deviation of .4 hours.
- Construct a 90% and 95% confidence interval?
- Interpret the confidence interval in your own words.
- What would happen to the confidence interval if you used a 99% interval?
- Would it expand or contract the interval?
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