Problem: Analysis of user purchasing behavior on e-commerce platforms
Background: An e-commerce platform wants to study whether the average purchase amount of users is affected by membership level (ordinary members vs. gold members). The most recent order amount (in US dollars) of 30 ordinary members and 30 gold members was randomly selected, and the data is as follows:
Ordinary members: sample mean = $85, sample standard deviation = $15
Gold members: sample mean = $110, sample standard deviation = $20
Task:
1. Descriptive statistics: Calculate the 95% confidence interval of the two sets of data and explain the results.
2. Hypothesis test: At the significance level α=0.05, test whether there is a significant difference in the average purchase amount of the two types of members.
Propose the null hypothesis (H₀) and the alternative hypothesis (H₁).
Choose an appropriate test method (such as independent sample t-test) and explain the reason.
Calculate the test statistic and draw a conclusion.
3. Additional thinking: If the p-value in the actual analysis is 0.03, but the platform manager explains that “the difference may be caused by sampling error”, how to respond?
Essay Writing Service Features
Our Experience
No matter how complex your assignment is, we can find the right professional for your specific task. Achiever Papers is an essay writing company that hires only the smartest minds to help you with your projects. Our expertise allows us to provide students with high-quality academic writing, editing & proofreading services.
Free Features
Free revision policy
$10Free bibliography & reference
$8Free title page
$8Free formatting
$8How Our Dissertation Writing Service Works
First, you will need to complete an order form. It's not difficult but, if anything is unclear, you may always chat with us so that we can guide you through it. On the order form, you will need to include some basic information concerning your order: subject, topic, number of pages, etc. We also encourage our clients to upload any relevant information or sources that will help.
Complete the order form
Once we have all the information and instructions that we need, we select the most suitable writer for your assignment. While everything seems to be clear, the writer, who has complete knowledge of the subject, may need clarification from you. It is at that point that you would receive a call or email from us.
Writer’s assignment
As soon as the writer has finished, it will be delivered both to the website and to your email address so that you will not miss it. If your deadline is close at hand, we will place a call to you to make sure that you receive the paper on time.
Completing the order and download