Assumption is that the new billing system prepared a

assumption is that the new billing system prepared a statistically considerable variance in
decreasing the payment time. Therefore, the approval is to continue with marketing the system to
other trucking firms.
Conclusion
Through the above calculations it was found that the trucking firm has lowered their mean
payment time using the new software. With a 95% confidence interval being at most 19.1 days
and 99% confidence interval at the most 19.4 days, the new software is below the estimate of
19.5 days. The probability of observing the mean time at or below 18.1077 days is 37%. It has
been concluded that the new software has reduced the mean bill payment time. S tatistical
examination was mandatory to estimate the success of the new system in order to further market
the system to other trucking firms. More than likely, the new system will be operated by several
trucking firms all over.

5
References
Black, K. (2017). Business statistics for contemporary decision making (9 th ed.). Hoboken, NJ:
John Wiley & Sons, Inc.
Engineering statistics handbook. (2018). Retrieved from
Math is fun. (2018). Retrieved from