- Tags:
- Show more
- Pages:
- 3
- Words:
- 825
Applying the Concepts Name of the Student Professor’s Name Course Background Both descriptive and inferential statistics play a key role in aiding decision-making across different situations (Lehmann, 1997). Such statistical measures are also important in addressing quality concerns with products and services (Nickerson, 1997, Branch, 2014). The present article explored the role of such statistical measures in addressing quality concerns for a Minivan manufacturing company. As a responsible professional, my job is to ensure that the interests of the consumers are protected under all legible circumstances. Recently, the end-users of the minivans were complaining that the on-road mileage that they were actually getting differed from the mileage that was assured by the company before purchase of the minivan. The company claimed that the minivans would give a mean gas mileage of 28 miles per gallon. However, I inspected the manufacturing plant and randomly selected 41 new Minivans to test their on-road mileage. I tested the on-road mileage for each of the 41 new Minivans and observed that the mean mileage achieved by the new Minivans was 26.7 + 4.2 miles per gallon. The report is provided on different descriptive and inferential statistics. All statistical analysis for the present study was conducted with the in-silico.net/tools/statistics/ztest (professional version) software. Results & Analysis Part-One: Descriptive Statistics Descriptive statistics results Parameter Value Mean 26.700 SD 4.200 SEM 0.656 N 41 90% CI 25.596 to 27.804 95% CI 25.374 to 28.026 99% CI 24.926 to 28.474 Table 1: Confidence-interval of the observed
Leave feedback