Hi There,

I study research questions and hypothesis testing. I created a research question and null$/$alternative hypothesis, then used the ANOVA two$-$way test, but the professor referred to creating a proportion test to apply. I need help how to apply the proportion test in Python function for the Research Questions and Hypotheses:

GST Impact on Product Categories:

Research Question $($RQ $3)$: How does the GST percentage vary across different product categories, and what is the potential impact on sales?

Null Hypothesis $($H$30)$: There is no significant difference of GST percentage variations across different product categories on sales in the population of interest.

Alternative Hypothesis $($H$3$a$)$: There is a significant difference of GST percentage variations across different product categories on sales in the population of interest.

I added the dataset tax$\_$amount detail.

Table $1$: Online Sales Data description of listings, variables name, and variables' type.

Variable Type of Variable Description

CustomerID Nominal Unique identifier for customers.

Transaction$\_$ID Numerical $($Discrete$)$ Unique transaction identifier.

Transaction$\_$Date Numerical $($Temporal$)$ Date of the transaction.

Product$\_$SKU

Nominal

Unique ID for products sold.

Product$\_$Description Nominal Description of the product.

Product$\_$Category Nominal Categorization of products.

Quantity Numerical $($Discrete$)$ Number of items purchased in a transaction.

Avg$\_$Price Numerical $($Continuous$)$ Average price per quantity.

Delivery$\_$Charges Numerical $($Continuous$)$ Cost associated with delivery.

Coupon$\_$Status Nominal Indicates if a discount coupon was applied.

Table $5$: Tax Amount Data description of listings, variables name, and variables' type.

Variable Type of Variable Description

Product$\_$Category Nominal Product category.

GST Numerical $($Continuous$)$ Percentage of Goods and Services Tax applied to each category.

My question is how to apply the proportion test to write the Python function for the above hypothesis test.