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A trucking company has been requested to quote a realistic turnaround time for a contract to handle the distribution of products to supermarkets.
Turn around in days. Frequency
less than 2 25
2 but less than 4. 36
4 but less than 6. 66
6 but less than 8. 47
8 but less than 10. 26
10 but less than 12. 18
12 but less than 14. 2
a. Calculate the mean
b. Calculate the standard deviation of the turnaround time
c. Calculate the median turnaround time
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