[See Solution] At a local supermarket receiving dock, the number of truck arrivals per day is recorded for 100 days. Estimate the mean from the sample.
Question: At a local supermarket receiving dock, the number of truck arrivals per day is recorded for 100 days.
- Estimate the mean from the sample.
- Calculate the expected frequencies assuming a Poisson distribution. Show your calculations in a spreadsheet format.
- Carry out the chi-square test, combining end categories as needed to ensure that all expected frequencies are at least five. Show your degrees of freedom calculation.
- At α = .05, can you reject the hypothesis that arrivals per day follow a Poisson process?
| Arrivals per Day at a Loading Dock | |||||||||
| Number of Arrivals | |||||||||
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | Total | |
| Frequency | 4 | 23 | 28 | 22 | 8 | 9 | 4 | 2 | 100 |
Deliverable: Word Document 
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