### Question details

Payment Time Case Data Set
\$ 10.00

the Payment Time Case Study and Data Set.
Develop a 700-word report including the following calculations and
using the information to determine whether the new billing system has
reduced the mean bill payment time:
• Assuming the standard deviation of the payment times for all
payments is 4.2 days, construct a 95% confidence interval estimate to
determine whether the new billing system was effective. State the
interpretation of 95% confidence interval and state whether or not the
billing system was effective.
• Using the 95% confidence interval, can we be 95% confident that μ ≤
19.5 days?
• Using the 99% confidence interval, can we be 99% confident that μ ≤
19.5 days?
• If the population mean payment time is 19.5 days, what is the
probability of observing a sample mean payment time of 65 invoices
less than or equal to 18.1077 days?
Format your assignment consistent with APA format.

Due on: 07 Apr, 2017 07:38:00 Asked on: 04 Apr, 2017 12:44:27
Due Date has already passed, but you can still Post Solutions.

### Twinnnn

Available solutions
• \$ 10.00
Payment Time Case Data Set | Rated A+
Ple
This Solution has been Purchased 6 time Submitted on: 04 Apr, 2017 10:44:36 Average Rating for this solution is A+ Word Count 1 Attachments:

### Solutions

• \$ 10.00
Payment Time Case Data Set
The new chargi
This solution has not purchased yet. Submitted on: 06 Apr, 2017 09:09:35 Word Count 3 Attachments: