Nancy is a waitress at Seventh Heaven Hamburgers. She wants to estimate the average amount each table leaves for a tip. A random sample of 5 groups was taken and the amount they left for a tip (in dollars) is listed below: $11.00 $6.00 $5.00 $4.00 $14.00 a.) Find a 90% confidence interval for the average amount left by all groups. (*round to the nearest cent*) $$ < μμ < $$ b.) If the sample size were larger, with everything else remaining the same, would the margin of Error increase or decrease? Increase Decrease c.) If the Confidence level were 95% instead of 90%, would the range (size) of the Confidence Interval be larger or smaller? Smaller Larger
Nancy is a waitress at Seventh Heaven Hamburgers. She wants to estimate the average amount each table leaves for a tip. A random sample of 5 groups was taken and the amount they left for a tip (in dollars) is listed below: $11.00 $6.00 $5.00 $4.00 $14.00 a.) Find a 90% confidence interval for the average amount left by all groups. (*round to the nearest cent*) $$ < μμ < $$ b.) If the sample size were larger, with everything else remaining the same, would the margin of Error increase or decrease? Increase Decrease c.) If the Confidence level were 95% instead of 90%, would the range (size) of the Confidence Interval be larger or smaller? Smaller Larger
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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Nancy is a waitress at Seventh Heaven Hamburgers. She wants to estimate the average amount each table leaves for a tip. A random sample of 5 groups was taken and the amount they left for a tip (in dollars) is listed below:
| $11.00 | $6.00 | $5.00 | $4.00 | $14.00 |
a.) Find a 90% confidence interval for the average amount left by all groups. (*round to the nearest cent*)
$$ < μμ < $$
b.) If the
- Increase
- Decrease
c.) If the Confidence level were 95% instead of 90%, would the
- Smaller
- Larger
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