The journey-to-work (JTW) times (in minutes) by 10 commuters in Prince George’s County were obtained. The...
The journey-to-work (JTW) times (in minutes) by 10 commuters in Prince George’s County were obtained. The observations are: 19.5, 24.5, 32.1, 24.6, 23.0, 10.4, 23.8, 22.7, 63.1, 8.4. The JTW of all commuters in the Prince George’s County follow a normal distribution. Based on the 12 commuters, can you test whether the average JTW time in the Prince George’s County is 25 minutes? Do this question by hand.
Homework Answers
Let 
denotes the average
JTW time in the Prince George’s County.
Conclusion - There is insufficient evidence to conclude that the average JTW time in the Prince George’s County is significantly different from 25 minutes.
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The journey-to-work (JTW) times (in minutes) by 10 commuters in
Prince George’s County were obtained. The...
________________ ________________ ______________ 11. Using Excel - Scatter diagrams, estimated regression equations, and trendlines Suppose a...
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11. Using Excel - Scatter diagrams, estimated regression equations, and trendlines Suppose a company records data on sales calls, induding the length of each call and whether a sale was made. The manager is interested in determining whether there is a relationship between the average time spent per call and the number of sales made by each employee, so she obtains the average call length and the total number of sales over a 2-week period for a...
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11. Using Excel - Scatter diagrams, estimated regression equations, and trendlines Suppose a company records data on sales calls, induding the length of each call and whether a sale was made. The manager is interested in determining whether there is a relationship between the average time spent per call and the number of sales made by each employee, so she obtains the average call length and the total number of sales over a 2-week period for a...
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