The average total dollar purchase at a convenience store is less than that at a supermarket. Despite smaller-ticket purchases, convenience stores can still be profitable because of the size of operation, volume of business, and markup. A researcher is interested in estimating the average purchase amount for convenience stores in Canmore, Alberta. To do so, she randomly sampled 24 purchases from several convenience stores in Canmore and tabulated the amounts to the nearest dollar. Use the following data to construct a 90% confidence interval for the population average amount of purchases. Assume that the population standard deviation is 3.23 and the population is normally distributed. Appendix A Statistical Tables $2 $11 $8 $7 $9 $3 5 4 2 1 10 8 14 7 3 7 2 4 1 3 8.
The average total dollar purchase at a convenience store is less than that at a supermarket. Despite smaller-ticket purchases, convenience stores can still be profitable because of the size of operation, volume of business, and markup. A researcher is interested in estimating the average purchase amount for convenience stores in Canmore, Alberta. To do so, she randomly sampled 24 purchases from several convenience stores in Canmore and tabulated the amounts to the nearest dollar. Use the following data to construct a 90% confidence interval for the population average amount of purchases. Assume that the population standard deviation is 3.23 and the population is normally distributed. Appendix A Statistical Tables $2 $11 $8 $7 $9 $3 5 4 2 1 10 8 14 7 3 7 2 4 1 3 8.
MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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![**Estimating Average Purchases at Convenience Stores**
The average total dollar purchase at a convenience store is less than that at a supermarket. Despite smaller-ticket purchases, convenience stores can still be profitable because of the size of operation, volume of business, and markup. A researcher is interested in estimating the average purchase amount for convenience stores in Canmore, Alberta. To do so, she randomly sampled 24 purchases from several convenience stores in Canmore and tabulated the amounts to the nearest dollar. Use the following data to construct a 90% confidence interval for the population average amount of purchases. Assume that the population standard deviation is 3.23 and the population is normally distributed.
**Sample Data:**
- $2, $11, $8, $7, $9, $3
- 5, 4, 2, 1, 10, 8
- 14, 7, 6, 3, 7, 2
- 4, 1, 3, 6, 8, 4
(Round the answers to 3 decimal places, e.g., 0.758.)
\[ \boxed{\leq \mu \leq} \]
For further reference, see **Appendix A: Statistical Tables**.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8ff8a9d1-27d7-4c01-984f-c0979e8297f8%2Fd97c1e79-07f2-4fb2-81b3-efda20b6ef48%2Fjrsxe8p_processed.png&w=3840&q=75)
Transcribed Image Text:**Estimating Average Purchases at Convenience Stores**
The average total dollar purchase at a convenience store is less than that at a supermarket. Despite smaller-ticket purchases, convenience stores can still be profitable because of the size of operation, volume of business, and markup. A researcher is interested in estimating the average purchase amount for convenience stores in Canmore, Alberta. To do so, she randomly sampled 24 purchases from several convenience stores in Canmore and tabulated the amounts to the nearest dollar. Use the following data to construct a 90% confidence interval for the population average amount of purchases. Assume that the population standard deviation is 3.23 and the population is normally distributed.
**Sample Data:**
- $2, $11, $8, $7, $9, $3
- 5, 4, 2, 1, 10, 8
- 14, 7, 6, 3, 7, 2
- 4, 1, 3, 6, 8, 4
(Round the answers to 3 decimal places, e.g., 0.758.)
\[ \boxed{\leq \mu \leq} \]
For further reference, see **Appendix A: Statistical Tables**.
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